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List of Sea Animals A-Z

Updated on May 05, 2015
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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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A

  • 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

B

  • 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

C

  • 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

D

  • 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

E

  • 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.

F

  • 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

G

  • 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

H

  • 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

I

  • 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

J

  • 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

K

  • 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

L

  • 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

M

  • 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
Manatees | Source

N

  • 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
Nudibranch | Source

O

  • 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

P

  • 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

Q

  • 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

R

  • 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

S

  • 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.

T

  • 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

U

  • 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

V

  • 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

W

  • 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

X

  • 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

Y

  • 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

Z

  • 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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    • profile image

      anonymous 3 years ago

      Excellent work! Cheers!

    • razelle09 profile image

      razelle09 3 years ago

      you've got a nice list here

    • profile image

      SteveKaye 3 years ago

      This wonderful resource could be a book.

    • Amadeus00 profile image

      Amadeus00 3 years ago

      ...amazing lens...thank you.

    • profile image

      The_Kelster 3 years ago

      Awesome lens! Informative and really fun to read through! :)

    • profile image

      diana 2 years ago

      cool

    • profile image

      poo 2 years ago

      goodish list could be better!!

    • profile image

      Lingka 2 years ago

      Thx for your help i have a home work and this really help

      your awesome

    • profile image

      Lexi 2 years ago

      That was cool

    • profile image

      iqra 2 years ago

      wonderfull photo

    • profile image

      Anonymous.1.0.1 2 years ago

      Good job.,

    • profile image

      latha 2 years ago

      Excellent

    • profile image

      cow dung 2 years ago

      okay, but still missing a lot of other sea animals

    • profile image

      aj cubio 2 years ago

      this is my project in english...

      we made a book of ocean animals

    • profile image

      leibwood 2 years ago

      bull shark can

    • profile image

      greedy git 2 years ago

      One word epic

    • profile image

      Caron 22 months ago

      Doing a Unit of Inquiry on Ocean animals. Your list is great! We love the video about the North Sea Marine Life. Great for young kids. The shark videos are a little graphic for a younger audience. Thanks for the resource.

    • profile image

      abhay 21 months ago

      Thanx for helping me i had got a homework.

      Thanx again.

    • profile image

      Funny Bunny 21 months ago

      Thx it really helped my home work

    • profile image

      abcdefg 21 months ago

      have you ever thought of the zebra shark

    • profile image

      DR. BABITA RAWAT 20 months ago

      wonderful collection ,its really a grt help

      thanx for providing

    • profile image

      Cole 18 months ago

      Fantastic,Wonderful Photos:)

    • profile image

      Alisha herina 17 months ago

      Thankyou. Its so cool to finished my project❤️

    • profile image

      Jk 17 months ago

      Good

    • profile image

      Kelly 16 months ago

      So helpful on my project! Thnxs a ton!!!

    • profile image

      Kim Wilmoth 14 months ago

      You forgot Orcas in the O's and you forgot Squid, Sting Ray and Seal in the S's...Probably a lot more too, but don't have time to figure it out.

    • profile image

      Kim Wilmoth 14 months ago

      Oh yeah, and Salmon too.

    • profile image

      swathi.s 14 months ago

      Thankyou. Its so helpful to complete my project.

    • profile image

      jeff gilmore 12 months ago

      it was rubesh

    • profile image

      Jorjatonks 11 months ago

      Doing this in spelling, it really helped!

    • profile image

      stephanie 11 months ago

      I had to write a paragran about all the marine mamals

    • profile image

      jogi dad 10 months ago

      Found helpful in a glance. Do you know this sea creature Mahimahi ? check it out http://urdu.wordinn.com/mahimahi

    • profile image

      Jojo 9 months ago

      Good.It is very nice to me.

    • profile image

      luis 9 months ago

      thank you! i really wanted this list!

    • profile image

      random person 8 months ago

      interesting

    • profile image

      A. K. Strong 7 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.

    • profile image

      Cullan.R 7 months ago

      Thank you this helped me with my homework!!

    • profile image

      prashanth 7 months ago

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

    • profile image

      Walks tinged 6 months ago

      Helped a lot

    • profile image

      one word beautiful 6 months ago

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

    • profile image

      Ari Welmare 6 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.

    • profile image

      maybee vantor 6 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

    • profile image

      Freya 4 months ago

      Great this helped me a lot with my homework

    • profile image

      Frankie 4 months ago

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

    • profile image

      Idubbbz 4 months ago

      leafy has no chin

    • profile image

      Lol 3 months ago

      This was amazing an I would definetely use it again

    • profile image

      Sarah 3 months ago

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

    • profile image

      A bee 3 months ago

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

    • profile image

      gavin 3 months ago

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

    • profile image

      ASminecraft 3 months ago

      This is a good scoure

    • profile image

      angake 6 weeks ago

      this is really nice

    • profile image

      anonmous 6 weeks ago

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

    • profile image

      camp keep 3 weeks ago

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

    • profile image

      Bonnie♥‿♥ 13 days ago

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

    • profile image

      ur mom 13 days ago

      thx this helps on my project

    • profile image

      i dont need a name.... 6 days ago

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

    • profile image

      kirsten 3 days ago

      helped me alot

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