List of Sea Animals A-Z


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

New Guestbook Comments 50 comments

anonymous 3 years ago

Excellent work! Cheers!

razelle09 profile image

razelle09 3 years ago

you've got a nice list here

SteveKaye 3 years ago

This wonderful resource could be a book.

Amadeus00 profile image

Amadeus00 2 years ago

...amazing lens...thank you.

The_Kelster 2 years ago

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

diana 2 years ago


poo 2 years ago

goodish list could be better!!

Lingka 2 years ago

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

your awesome

Lexi 2 years ago

That was cool

iqra 2 years ago

wonderful photo

Anonymous.1.0.1 23 months ago

Good job.,

latha 22 months ago


cow dung 22 months ago

okay, but still missing a lot of other sea animals

aj cubio 22 months ago

this is my project in english...

we made a book of ocean animals

leibwood 21 months ago

bull shark can

greedy git 21 months ago

One word epic

Caron 19 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.

abhay 18 months ago

Thanx for helping me i had got a homework.

Thanx again.

Funny Bunny 18 months ago

Thx it really helped my home work

abcdefg 18 months ago

have you ever thought of the zebra shark

DR. BABITA RAWAT 17 months ago

wonderful collection ,its really a grt help

thanx for providing

Cole 15 months ago

Fantastic,Wonderful Photos:)

Alisha herina 15 months ago

Thankyou. Its so cool to finished my project❤️

Jk 14 months ago


Kelly 13 months ago

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

Kim Wilmoth 11 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.

Kim Wilmoth 11 months ago

Oh yeah, and Salmon too.

swathi.s 11 months ago

Thankyou. Its so helpful to complete my project.

jeff gilmore 9 months ago

it was rubesh

Jorjatonks 9 months ago

Doing this in spelling, it really helped!

stephanie 8 months ago

I had to write a paragran about all the marine mamals

jogi dad 7 months ago

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

Jojo 7 months ago

Good.It is very nice to me.

luis 7 months ago

thank you! i really wanted this list!

random person 5 months ago


A. K. Strong 5 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.

Cullan.R 5 months ago

Thank you this helped me with my homework!!

prashanth 4 months ago

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

Walks tinged 4 months ago

Helped a lot

one word beautiful 3 months ago

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

Ari Welmare 3 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.

maybee vantor 3 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

Freya 2 months ago

Great this helped me a lot with my homework

Frankie 7 weeks ago

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

Idubbbz 6 weeks ago

leafy has no chin

Lol 4 weeks ago

This was amazing an I would definetely use it again

Sarah 4 weeks ago

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

A bee 2 weeks ago

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

gavin 12 days ago

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

ASminecraft 11 days ago

This is a good scoure

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