List of Sea Animals A-Z

Updated on August 23, 2017

A List of Sea Animals

The ocean, the original home of earth’s animal life, has creatures of every size and type. It’s an exciting place to explore. Read through this list of sea animals—arranged in alphabetical order—to start exploring what's in our seas. See photos, pictures, and facts. Start your journey now and see for yourself how awesome our sea really is!

How Many Sea Animals Can You Name Off the Top of Your Head?

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  • Abalone: a large edible sea snail of coastal waters
  • Albacore: a prized species of tuna
  • Anchovy: a small, oily fish of the Atlantic and Pacific, providing food for many fish, marine mammals, and birds
  • Angelfish: a bright-colored fish of coral reefs

An abalone pried from the rocks
An abalone pried from the rocks | Source


  • Barnacle: an arthropod of coastal waters that attaches itself to rocks and shells
  • Barracuda: a tropical and subtropical predatory fish with a feisty appearance
  • Blue Crab: a delicacy on the eastern coast of the US
  • Blue Whale: the world’s largest marine animal
  • Bull Shark: an aggressive shark that can thrive in both salt water and fresh water

Blue Whale (tail)
Blue Whale (tail) | Source


  • Cleaner wrasse: a coral-inhabiting fish that removes parasites from other fish
  • Clownfish: a small tropical fish of the Indian and Pacific Oceans, with orange and white stripes
  • Cod: a deep-sea fish, formerly a staple food in Europe and America, now greatly reduced in numbers in the Atlantic
  • Conch: an edible shellfish with a distinctive spiral shell
  • Coral: polyps, mostly tropical, mostly living in huge colonies along with photosynthesizing microorganisms
  • Crown of Thorns: a large sea star that feeds on corals
  • Cuttlefish: a squid-like creature belonging to the mollusk family

Triggerfish being cleaned by wrasses (small blue fish), Red Sea
Triggerfish being cleaned by wrasses (small blue fish), Red Sea | Source


  • Dolphin: an intelligent, vocal, social sea mammal
  • Dottyback: a brightly colored fish of coral reefs
  • Dragonet: a showy tropical fish of the Indian and Pacific Oceans, with dragon-like eyes and fins
  • Driftfish: perch-like fish of tropical and subtropical waters, often associated with jellyfish or sargasso weed
  • Dugong or Sea Cow: a herbivorous marine mammal, a threatened species of the coastal Indian Ocean
  • Dungeness Crab: a large, prized edible crab from the western coast of North America

Mandarin Dragonet
Mandarin Dragonet | Source


  • Eel: long-bodied fishes mostly living in shallow waters
  • Elephant Seal: a large seal, with big-nosed males, living in the waters around western North America and Antarctica
  • Emperor Shrimp: a bright-colored shrimp of the Indo-Pacific region that lives cooperatively on other sea animals
  • Estuarine Crocodile: the world’s largest living reptile, found in Southeast Asian and Australian estuaries

Did You Know? Estuarine Crocodiles Are Huge

The largest crocodile ever caught alive was a male estuarine crocodile named Lolong, measuring 20 feet and 3 inches and weighing 2370 pounds. He was caught September 2011 in the province of Agusan del Sur, Philippines, having been accused of eating humans and water buffalo. He was exhibited in an ecotourism park in Bunawan. Until he died in February 2013, he was the world's largest crocodile in captivity.


  • Fan Worm: a worm that lives in a tube and feeds by straining seawater with its feathery tentacles
  • Flounder: a flatfish, camouflaged to match the ocean bottom, with both its eyes located on one side
  • Flying Fish: a tropical fish with wing-like pectoral fins
  • Fugu: a puffer fish, a Japanese delicacy, whose body parts contain a nerve toxin

Fugu (smaller fish at front) with Amberjack
Fugu (smaller fish at front) with Amberjack | Source


  • Giant Squid: one of the largest living animals, up to 43 feet long, found in the world’s deep oceans
  • Great White Shark: a large, aggressive shark with a white belly and gray back
  • Grouper: a stubby, big-mouthed fish; many can change sex from female to male
  • Grunion: a small, slender fish that spawns on beaches at night in Southern California and Baja California

Giant Squid Eating Bait on Camera


  • Haddock: a gray bottom-dwelling fish endemic to the North Atlantic Ocean
  • Hake: a food fish with an elongated body and a large head
  • Halibut: world’s largest flatfish, diamond-shaped, with one dark side and one light
  • Herring: a popular food fish that travels in large schools
  • Humpback Whale: a majestic-looking black-and-white whale with long, wide pectoral fins

Two giant halibut caught near Petersburg, Alaska in the 1930s
Two giant halibut caught near Petersburg, Alaska in the 1930s | Source


  • Irukandji: a tiny but highly venomous jellyfish mostly found off the Australian coast
  • Isopods: crustaceans, seagoing relatives of sowbugs and pillbugs

Deep-sea giant isopod
Deep-sea giant isopod | Source


  • Jellyfish: among the world’s most ancient multicelled animals, with a soft, jelly-like “bell” and tentacles
  • John Dory: a coastal fish with an eyelike black mark on each side, and long, spiny dorsal fins

Cauliflower jellyfish (Cephea cephea), Red Sea
Cauliflower jellyfish (Cephea cephea), Red Sea | Source


  • Killer Whale or Orca: a toothed, predatory black-and-white whale
  • King Mackerel or Kingfish: a medium-sized food fish of the Atlantic coast of the Americas
  • Krill: tiny shrimp-like crustaceans, very numerous in all oceans, important food for other creatures

Northern Krill
Northern Krill | Source


  • Lamprey: a jawless fish with an eel-like body, circular sucking mouth, and triangular teeth; many are bloodsuckers
  • Leafy Sea Dragon: a fish with seaweed-like appendages for camouflage
  • Ling: a long slender fish of the North Atlantic
  • Lionfish: a venomous fish with red and white stripes and spiny dorsal fins
  • Lobster: a large crustacean with a muscular tail and two large claws

Leafy Sea Dragon
Leafy Sea Dragon | Source


  • Mackerel: a food fish with a striped back and deeply-pronged tail
  • Mahi-mahi or Dorado: a medium-sized fish with a long back fin running from head to tail
  • Manatee or Sea Cow: a large herbivorous sea mammal, related to the dugong, with rounded flippers
  • Manta Ray: a very large ray (up to 20 feet), a filter-feeder of open oceans
  • Megalodon: an extinct giant shark, one of the largest predators ever, up to 65 feet long
  • Mulloway: a predatory fish mostly found on Australian rocky shorelines
  • Mussel: a two-shelled mollusk; most attach themselves to shoreline rocks with tough threads

Manatees | Source


  • Narwhal: an Arctic whale whose males have a long tusk
  • Nautilus: a primitive mollusk of the tropical Pacific, with a spiral shell and tentacles
  • Needle Fish: a slender-bodied, long-jawed fish of shallow water
  • Nemertea or Ribbon Worm: a primitive invertebrate with a stinging organ in its front end
  • Nudibranch: a colorful marine slug

Nudibranch | Source


  • Oarfish: a long, slender, seldom-seen fish; 20-foot specimens occasionally wash up on beaches
  • Octopus: a color-changing mollusk with eight suction-cup-bearing tentacles; the most intelligent invertebrate
  • Olive Sea Snake: a highly venonomous swimming snake of Indo-Pacific coral reefs
  • Ostracod or Seed Shrimp: a tiny, two-shelled crustacean, abounding in oceans as well as in humid environments on land
  • Oyster: a two-shelled mollusk eaten as a delicacy around the world

Olive sea snake
Olive sea snake | Source


  • Pilchard or Sardine: a small, oily fish that typically swims in large schools
  • Plankton: tiny marine organisms of all kinds—animals, plants, bacteria, algae, protists—that play a major role in the world’s food chains and chemical cycles
  • Porcupine Fish: a spiny tropical marine fish that can inflate itself
  • Porpoise: a small toothed marine mammal, related to dolphins but with different-shaped nose and teeth
  • Prawn: a name for the larger kinds of shrimp
  • Pufferfish or Puffers: poisonous fish (including fugu, above) that inflate into balloon-like shapes when threatened

Plankton (dinoflagellates, Neoceratium horridum) from the North Sea, magnified 160 times
Plankton (dinoflagellates, Neoceratium horridum) from the North Sea, magnified 160 times | Source


  • Quahog: a round, hard-shelled clam of the US Atlantic coast
  • Queen Conch: a large edible sea snail of the tropical and subtropical western Atlantic
  • Queensland Blenny: a small fish with comb-like teeth native to coral reefs of the western Pacific
  • Quillfish: a long, thin, seldom-seen fish of the northeastern Pacific

Quahogs from Narragansett Bay, Eastern US
Quahogs from Narragansett Bay, Eastern US | Source


  • Red Waratah Anemone: a red anenome (a polyp with stinging tentacles) of the shores of Australia and New Zealand
  • Requiem Shark: a group of aggressive shark species of warm oceans or fresh water
  • Ringed Seal: a small, earless seal native to the Arctic, that makes breathing holes in sea ice
  • Ross Seal: a large seal endemic to the Antarctic ice

Red waratah anemones in New South Wales, Australia.  The anemone on the right has closed itself up.
Red waratah anemones in New South Wales, Australia. The anemone on the right has closed itself up. | Source


  • Sea Cucumber: a soft, sausage-shaped echinoderm with leathery skin and a tentacled mouth
  • Sea Horse: a small, upright-swimming fish (it really is a fish) with a horse-like head
  • Sea Lion: a large, eared seal with long limbs acting as flippers
  • Sea Otter: a furry marine mammal of the north Pacific that eats sea urchins, mollusks, crustaceans, and fish
  • Sea Turtle: seven species of turtles that have flippers for limbs; they may live for hundreds of years
  • Sea Urchin: an echinoderm, often with a spherical body covered with long spines
  • Sponge: a marine invertebrate with a porous body without distinct tissues or organs
  • Starfish or Sea Star: predatory star-shaped echinoderms that crawl on tiny tube feet
  • Swordfish: a large, migratory fish with a sword-like snout

Purple tube sponges
Purple tube sponges | Source

Did You Know? Some Sharks Can Live in Fresh Water

Most sharks cannot survive in fresh water. But the Bull Shark ventures up estuaries and rivers, including the Mississippi River of North America, and seldom-seen River Shark species live in southern Asia and Australia.


  • Tiger Shark: a large shark (up to 16 feet) of tropical and subtropical oceans, with dark stripes
  • Tilefish: a small, spiny fish of tropical and temperate oceans, preferring coral reefs and sandy areas
  • Trumpetfish: a long, thin fish of the tropical western Atlantic, that often dangles or swims vertically to blend in with its surroundings
  • Tube Worms: a variety of different marine invertebrates that secrete hard tubes to protect themselves
  • Tun Shell: a tropical sea snail with a rounded shell said to resemble a “tun” or wine cask

Sand tilefish
Sand tilefish | Source


  • Umbrella Shell: a sea slug (gastropod) with a spotted skirt-shaped body extending from its shell
  • Unicornfish: an Indo-Pacific fish with a horn-like protrusion on its forehead

Spotted unicornfish, Red Sea
Spotted unicornfish, Red Sea | Source


  • Vampire Squid: a primitive cephalopod living at great depths, covered with light-emitting spots, with dark webbing connecting its tentacles
  • Velvet Crab: a small swimming crab of the North Atlantic and western Mediterranean
  • Violet Sea Snail: a purple sea snail of tropical and subtropical oceans that floats on a raft of mucus bubbles
  • Viper Fish: a deep-sea fish with long, sharp teeth, big jaws, and an illuminated bell-shaped lure

Velvet Crab
Velvet Crab | Source


  • Walrus: a large Arctic marine mammal with long tusks and whiskers
  • Whapuku or Wreckfish: a large fish, prized for food, from the seas off New Zealand and Australia
  • Whiting: a food fish of the cod family, of the shallow coastal waters off Europe

Young male walrus
Young male walrus | Source


  • Xiphias: Latin for "swordfish," the genus name for the swordfish group
  • Xiphosura: The 400-million-year-old class of arthropods that includes horseshoe crabs, which are related to spiders and ticks

Underside of horseshoe crab, Mexico
Underside of horseshoe crab, Mexico | Source


  • Yellowfin Tuna: a large, fast-moving fish of the open ocean, with yellow dorsal fins
  • Yellowtail Amberjack: a large food fish of the Indo-Pacific region
  • Yellow Tang: a small bright yellow fish of Indo-Pacific reefs, popular in saltwater aquariums

Yellow tang
Yellow tang | Source


  • Zooplankton: the huge variety of tiny animals, eggs, and larvae that drift in oceans
  • Zebra Turkeyfish: a spotted-and-striped spiny fish of shallow tropical Indo-Pacific waters

Zooplankton: Tiny calcium carbonate shells of foraminifera (Baculogypsina sphaerulata)
Zooplankton: Tiny calcium carbonate shells of foraminifera (Baculogypsina sphaerulata) | Source

Animals of the North Sea

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      nICE 2 days ago


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      Freestyle 2 days ago

      you have helped me so much but I need to know more about the sword shark

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      No 2 days ago


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      ANONYMOUS 2 days ago

      Thank you so much

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      RYnn 5 days ago

      This helped me, Thank you so much

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      dan 9 days ago

      your the best

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      Zoey 2 weeks ago

      You halp me with my work

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      dwils 2 weeks ago

      i LOVE orcas/killerwales

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      lyan 3 weeks ago


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      ollie 4 weeks ago

      whats a zebra turkey fish

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      dianey 2 months ago

      i love killer whale

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      irene 2 months ago

      i love horses

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      Cool dude 2 months ago

      I love animals

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      Jhon 2 months ago

      very helpful....

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      Will 2 months ago

      i like all sea


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      kayla 2 months ago

      blue whale

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      jojo 2 months ago

      blob fish

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      Chickennugget 2 months ago

      This was GREAT! I'm doing a project for school about sea creatures and I found my favorite: MANATEE!

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      Helllo Peeps!!! 2 months ago

      That is a amazing site!!!

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      Gianna 3 months ago


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      William Orger 3 months ago

      You forgot the bloop

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      Poppickle3 4 months ago

      really coolioo

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      Wajeeha 4 months ago

      Wow!This is cool and amazing.

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      manohar maury 4 months ago

      too good i am happy to study

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      Katie McNally 4 months ago

      Wow! Found my fav sea aanimal! Walrus!

    • profile image

      sala 5 months ago

      this is so cool and amazing

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       6 months ago

      AMAZING You could put this on facebook

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      Anakin Skywalker 6 months ago

      WOW! I used, like, 1700 of those in my book.

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      Mia 6 months ago

      great list really helped with my sisters homework...

      Thankyou very much!

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      chiru 6 months ago

      Super and sexy work!

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      junior 6 months ago

      am so inpressed with u guy

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      You forgot blobfish 7 months ago







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      CLASS 7 months ago

      thanks for everything you put here because my class really liked it! and i'm not doing correct punctuation because im in a rush but really thx!@

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      misha 7 months ago


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      Anuradha Dubey 7 months ago

      Excellent work

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      gigi 8 months ago

      Whasn't there a animal that was "A living fossil" ????

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      Rhio 8 months ago

      Thx a lot I finished home work now

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      Bobby Joe 8 months ago

      This really helped me with a school project, it came in handy!

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      someone who commented 8 months ago

      it looks so cool. great job!!!!!

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      Silly lily 8 months ago

      U did awesome! This is amazing, but u missed about fifteen. Try to edit it and add more animals. Thx! This really helped me with a school project. Thank u!

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      Brantlee 8 months ago

      I like this it give you stuff for school and i am in third grade

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      anwar hsan ch 8 months ago

      It's a very knowledgeable page I impressed ,03006917543

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      austin 8 months ago

      hi man

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      E1234 8 months ago

      My friend and I are finding things to research about Marine Biology, and this is extremely helpful and now I can tell her about lots of life in the ocean because of this website!! Thank you!! :)

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      lilly 8 months ago

      its so cool the great white shark

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      madeleineb 8 months ago

      well done

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      Scarborough 8 months ago


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      82 8 months ago

      Thank you

    • profile image

      anon 8 months ago

      You really helped me finish my project. Thank you very much

    • profile image

      Natalie Naber 9 months ago

      So many creatures to learn about

    • profile image

      bob 9 months ago

      lol man

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      macen 9 months ago

      A lot of animals

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      svl125 9 months ago

      nice work

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      shunem 9 months ago

      books you should make a book out of this

    • profile image

      shunem 9 months ago

      you are too cool

    • profile image

      shunem 9 months ago

      also sorry about crazy lady but your great

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      Heaven 9 months ago

      very good even though you missed a couple you still did good

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      manpreet kailey 9 months ago

      were did you find out all of this.and i used this list in abc order for my progect of habbitats.hope my teacher will like my progect and the others

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      Aidan S 10 months ago

      i also have 30 animal project due today and your website made it happen

      P.S I go to school with Ana

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      Ana 10 months ago

      I have a project due in my school and I have to find 30+ sea creatures this helped me soo much thanks for making this website.

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      kimber 10 months ago

      I like your website:)

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      shunem 10 months ago

      you are the best

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      shunem 10 months ago

      this is amazing great job cheers

    • profile image

      CRAZY WOMAN 10 months ago

      bye the way i was just kidding dude

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      shunem 10 months ago

      good job

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      andrew 10 months ago

      wheres the blue tang

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      VERY GOOOOOOOOOOOOOOD 10 months ago


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      why 10 months ago

      Missing so many animals I don't suggest this site.

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      hesggvs 10 months ago

      so good

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      kirsten 10 months ago

      helped me alot

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      i dont need a name.... 11 months ago

      cool........thats all i can

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      ur mom 11 months ago

      thx this helps on my project

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      Bonnie♥‿♥ 11 months ago

      This just helped me on my art work, now all I have to do is draw them and try my best.(^v^)

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      camp keep 11 months ago

      we are making a book about this and this is the best site i saw today for camp keep students:):):):):):)

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      anonmous 12 months ago

      AWESOME!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I love fish and this is a graet source for my project!

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      angake 12 months ago

      this is really nice

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      ASminecraft 13 months ago

      This is a good scoure

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      gavin 13 months ago

      thanks please please keep this site open but for different topics if they are not out there........

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      A bee 14 months ago

      that helped a lot :):):):):)

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      Sarah 14 months ago

      I needed this for homework thank you for your help you are the best

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      Lol 14 months ago

      This was amazing an I would definetely use it again

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      Idubbbz 15 months ago

      leafy has no chin

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      Frankie 15 months ago

      Great work I love owl cation it will help me a lot on my school work

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      Freya 15 months ago

      Great this helped me a lot with my homework

    • profile image

      maybee vantor 17 months ago

      I got sum help two bee'cause i couldn't decide if i liked a bee or crab more so out of it all i like the xiphosura

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      Ari Welmare 17 months ago

      I honestly got some help from this site because I had to list 100 animals and I had to separate them into 2 groups,I got to choose how to separate them,so I chose Non-Marine and Marine animals.By the way this is for my science class.

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      one word beautiful 17 months ago

      I love sea animals and when i grow up i will learn more about them

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      Walks tinged 17 months ago

      Helped a lot

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      prashanth 17 months ago

      awesome I got know of so many more sea creatures that have been listed here.

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      Cullan.R 18 months ago

      Thank you this helped me with my homework!!

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      A. K. Strong 18 months ago

      This sight is good for small projects, but I know of so many more sea creatures that have not been listed here. It would be a more effective sight if you were to include more than just the basic animals. Go deeper and give people information on creatures they may not even know of.

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      random person 19 months ago


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      luis 20 months ago

      thank you! i really wanted this list!

    • profile image

      Jojo 20 months ago

      Good.It is very nice to me.

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      jogi dad 21 months ago

      Found helpful in a glance. Do you know this sea creature Mahimahi ? check it out

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      stephanie 21 months ago

      I had to write a paragran about all the marine mamals

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      Jorjatonks 22 months ago

      Doing this in spelling, it really helped!

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      jeff gilmore 23 months ago

      it was rubesh

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      swathi.s 2 years ago

      Thankyou. Its so helpful to complete my project.

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      Kim Wilmoth 2 years ago

      Oh yeah, and Salmon too.