Animals in Atlantic

Below you can find a complete list of Atlantic Ocean animals. We currently track 98 animals in the Atlantic and are adding more every day!

The Atlantic Ocean is a warm body of saltwater, the second largest ocean on the planet.

The Atlantic is home to a litany of wildlife. From the smallest creatures to massive mammals, from the dangerous to the nearly extinct, the Atlantic is a fascinating world.

Let’s take a look at the Atlantic Ocean and its inhabitants.

What Thrives in the Atlantic Ocean?

South and North America, Africa, and Europe border the Atlantic Ocean. It is the richest fishing water on Earth. The wildlife consists of ghost crabs, sharks, starfish, sea turtles, and much more.

There are a variety of species considered endangered. This includes whales, the manatee, albatrosses, and sea lions. A lot of that is due to interference by humankind. There is also overfishing, accidental netting, and pollution.

Besides being the second largest body of water, one of the most interesting facts about the region is the Atlantic can also boast of being the world’s second most dangerous ocean. And we’re not talking about the unique animals in national waters. You can add surface temperatures, coastal winds, and water currents to the list.

The Most Dangerous Animals in the Atlantic Ocean Today

The ocean is a dangerous place. It’s inhabited by creatures whose sole code is survival.

From the outright aggressive and vicious down to the poisonous, there is a reason they call it wildlife. Here is a list and some facts about three dangerous and unique animals we want to watch out for.

  • Great White Shark – Despite what the movies want you to believe, the Great White isn’t looking to chomp on human flesh but it inexplicably happens. These dangerous animals are the world’s largest predatory fish and are extremely powerful. The Great White swims all over the planet, but the scientific community believes numbers are going down due to hunting and habitat loss.
  • Lionfish – It’s said the lionfish was originally brought to and intentionally released into the Atlantic. Recognized by its spiky fin rays, the lionfish is pretty dang venomous. The sting isn’t fatal but extremely painful. But the lionfish aren’t predatory animals. They attack when disturbed.
  • Manta Ray – The manta, or devil, ray swims at or near the ocean surface. Their whiplike tails can leave a pretty painful lash. Some manta ray tails have one or more unique stinging spines. The smallest of the species will grow close to two feet. The largest may grow as large as 23 feet.

Where to Find The Top Wild Animals In the Atlantic Ocean

Considering the expanse of an ocean, it can be hard to determine where to find a specific species in national waters. But it’s not impossible.

Northwest Atlantic

The main species found in the northwest region of the Atlantic are:

Northeast Atlantic

Among the creatures in the Northeast Atlantic are:

  • Haddock
  • Capelin
  • Mackerel
  • Herring
  • Blue whiting

Southwest Atlantic

In the southwest region of the ocean, the list of animals include:

  • Argentine Hake
  • Grenadiers
  • Sardinella
  • Squid
  • Tuna

Southeast Atlantic

The Southeast Atlantic is home to:

  • Cape horse mackerel
  • Pilchard
  • Snoek
  • Sole
  • Dentext

Endangered Animals in The Atlantic Ocean

Humankind and its determined need for progress continue to leave the world inundated with endangered animals. Oil spills, hunting, pollution, and waste all play a role in destroying ecosystems.

Here are the species looking to be extinct if humankind does nothing to preserve them.

Sea Countries Animals Lists

Click any of the countries below to see a detailed list of animals located in that country!

Sea Animals

Adelie Penguin

Eats up to 2kg of food per day!

African Penguin

The only penguin species in Africa!

Albacore Tuna

The albacore is a very fast swimmer


The largest wingspan of any bird in the world!

Aldabra Giant Tortoise

One got to be 255 years old!


They have two sets of eyelids!


November 12th is celebrated as National Pizza with the Works Except Anchovies Day


There are 70 different species!


Closely related to crabs and lobsters!


Can grow to nearly 2 meters long!

Barramundi Fish

Scale rings indicate age


Builds a dam from sticks and leaves!

Beluga Sturgeon

The beluga sturgeon is one of the largest bony fish in the world!


Not all birds are able to fly!

Black Marlin

Every black marlin is born as a female.


One of the ugliest creatures in existence!

Blue Shark

Blue sharks can have up to 135 pups at a time.

Blue Whale

The largest animal on Earth

Bluefin Tuna

The bluefin is one of the largest fish in the world

Bonito Fish

May eat squid or other small invertebrate ocean life

Bonnethead Shark

Bonnetheads are the only hammerhead sharks that use their pectoral fins to swim.


Seabirds found across the South Pacific!

Borneo Elephant

The smallest species of elephant!

Bottlenose Dolphin

Stays in groups from 15 to 2,000 in number!'

Bull Shark

Unpredictable and aggressive temperament!


Has loud cow-like calls!


There are thought to be up 20,000 species!

Butterfly Fish

There are more than 100 different species!


There are nearly 3,000 different species!


Also called ghost shark

Chinstrap Penguin

There are 7 million breeding pairs!


Also known as the anemonefish!


They eat other fish

Colossal Squid

Can survive eating a single fish for months

Cookiecutter Shark

The cookiecutter shark takes its name because it leaves a cookie-shaped bite hole in its prey.


Thought to be around 70,000 different species!


There are 93 different crab groups

Crested Penguin

Has long yellow eyebrows!


Found throughout the world's oceans!


Can reach speeds of up to 25 mph!


It's larvae are carnivorous!

Drum Fish

The drum fish makes a croaking sound with its swimming bladder!


Rows of tiny plates line their teeth!


Closely related to the Manatee!

Dusky Dolphin

Communicates using whistles, squeaks and clicks!


Eels can be a mere few inches long to 13 feet!

Elephant Seal

The largest species of seal in the world!

Emperor Penguin

The world's largest species of penguin!

False Killer Whale

The false killer whale looks like a cross between a dolphin and orca!


Has the largest teeth compared to body size of any known fish

Fin Whale

Found throughout ocean waters worldwide!


Respire through the gills on their heads!


A flat fish found in the Atlantic and Pacific!

Fluke Fish (summer flounder)

The chameleon of the seas!


There are more than 240,000 different species!

Flying Fish

Can glide in the air for hundreds of feet


Found inhabiting tropical islands and coasts!

Fur Seal

Found only in the Northern Hemisphere!

Galapagos Penguin

Found around the Equator!

Galapagos Tortoise

The biggest species of tortoise in the world!

Garden Eel

Garden eel colonies are made up of hundreds to thousands of individuals.

Gentoo Penguin

Found throughout the sub-Antarctic!

Giant Clam

Can reach nearly 4ft in length!


There are 29 different species!

Great White Shark

Can grow to more than 8 meters long!

Greenland Shark

This shark has the longest lifespan of any vertebrate.

Grey Reef Shark

One of the most common shark species!

Grey Seal

One of the rarest species of seal on Earth


Can use slime to suffocate marine predators or escape capture

Hammerhead Shark

Found in coastal waters around the world!

Harbor Seal

Harbor seals can dive as deep as 1400 feet

Harp Seal

The harp seal can migrate up to 3,000 miles every year

Hermit Crab

There are over 500 different species!


People enjoy the taste of the oily fish in many different ways including pickled, smoked, salted, dried and fermented.

Horn Shark

Endemic to the Californian coast!

Horseshoe Crab

Changed little in over 500 million years!

Humboldt Penguin

Found on the South American coast!

Humpback Whale

There are thought to be 80,000 left in the wild!

Immortal Jellyfish

Excellent hitchhiker on long-trip cargo ships

Indian Palm Squirrel

Natively found in parts of India and Sri Lanka!


There are an estimated 30 million species!


Have tentacles around their mouths!

Killer Whale

Typically consumes over 200 kg of food a day!

King Crab

Can have a leg span of nearly 2 meters!

King Penguin

More than 2 million breeding pairs!


Inhabits wetlands and woodlands worldwide!


The krill is perhaps the most important animal in the marine ecosystem!


Not related to the eel

Leopard Seal

The world's most aggressive seal species!


Females can release up to 15,000 eggs at a time!

Little Penguin

The smallest species of penguin!


Have been known to reach 100 years old!

Macaroni Penguin

Gather in colonies of up to 100,000 members!

Magellanic Penguin

Threatened by oil spills!


Also known as the Sea Cow!

Manta Ray

Can grow up to 9m wide!


Females lay up to 5 million eggs at one time in warm, shallow and salty waters

Minke Whale

There are two recognised species!

Moray Eel

Can grow to nearly 2 meters in length!

Nurse Shark

Commonly found in Central American waters!


There are around 300 different species!


Can process up to 10 litres of water an hour!


Spends 75% of it's time hunting for food!

Polar Bear

Could be extinct within the next 30 years!


Surprisingly, not a dolphin!


Closely related to crabs and lobsters!


The second most poisonous creature in the world!


Can remain in the water for up to 2 minutes!


Also known as the Caribou


These fish can grow up to three feet long!

Rockhopper Penguin

There are 3 different species!

Royal Penguin

Can reach speeds of 20mph!


Returns upstream every year to spawn

Salmon Shark

Salmon sharks are related to Great Whites.

Sand Tiger Shark

The sand tiger is the shark most commonly seen in aquariums.


Schools of sardines can be miles long and are often visible from an airplane


Sawfish teeth keep growing as the fish gets older

Scorpion Fish

There are more than 200 recognised species!

Sea Dragon

Inhabits tropical coastal waters of Australia!

Sea Lion

It's flippers allow it to walk on the land

Sea Otter

Eats over 40 different marine species!

Sea Slug

All sea slugs have both male and female sex organs

Sea Squirt

There are more than 3,000 known species!

Sea Turtle

Always return to the same beach to lay eggs!

Sea Urchin

Can live for up to 200 years!


Males give birth to up to 1,000 offspring!


There are 30 different species worldwide!


No shark species has any bones in their bodies


There are 2,000 different species worldwide!

Sixgill shark

The sixgill shark has six pairs of gills instead of the normal five

Skipjack Tuna

The skipjack is the most commonly caught tuna in the world

Sleeper Shark

The Greenland shark is one of the longest living vertebrates in the world.


There are nearly 1,000 different species!

Snowy Owl

One of the largest owl species in the world!

Sperm Whale

Each tooth weighs 1kg!

Spinner Shark

Can have up to 20 babies

Spiny Dogfish

Found in ocean waters worldwide!


There are more than 9,000 known species!


Some species are known to have 10 arms!


Has 2 stomachs to aid digestion!

Steller’s Sea Cow

Hunted to extinction in 17 years!


It's stinger is razor-sharp or serrated!


Large species can swallow whole salmon


Found around shallow coral reefs!


Its genus dates back to the Cretaceous period – 113 million years ago

Tiger Salamander

Found across the North American wetlands!


Can be heard out of water


Nests on tropical islands and cliffs!


The tuna has a sleek body that enables it to swim quickly through the water


Smallest cetacean in the ocean


Inhabits the freezing waters of the Arctic Circle!

Wandering Albatross

Featured in “The Rime of the Ancient Mariner”

Whale Shark

The largest species of fish in the world!

Wolf Eel

Wolf Eels may become tame and interact with human in areas where people frequently dive.


The wolffish has impressive canines with a powerful bite force!

Woolly Mammoth

Tusks grew to 16ft long!


There are more than 500 different species!

Yellow-Eyed Penguin

The rarest species of penguin!

Yellowfin Tuna

The yellowfin forms schools with other tuna species

Zebra Shark

Can get to be 30 years old in the wild!

Sea Animals List

Animals in Atlantic FAQs (Frequently Asked Questions) 

What animals live in the Atlantic Ocean?

The Atlantic Ocean takes up a huge portion of the planet. It’s home to Atlantic ghost crabs, sea lions, manatees, green sea turtles. gray seals, shrimp, starfish, redfish, flounder, trout, tarpon, and a variety of whales.

What is the most dangerous animal in the Atlantic Ocean?

There is a range of dangerous wildlife in these waters. The most dangerous is the Great White Shark. Of all the shark species, the great white outnumbers all of them in unprovoked attacks on humans. Still, compared to the shark, more people get killed by dogs, horses, and cows per year.

How do animals live in the ocean?

Ocean animals can withstand temps far greater than humans. The animals can because things like temperatures, food, light, and pressure remain relatively stable for great periods. Many animals in the ocean grow very slowly and travel long distances to find sustenance.

Are all fish in the Atlantic endangered?

Humankind is changing the ecosystem with oil and gas drilling, waste disposal, fishing, and mining. Animals are having difficulty adapting to the dramatic changes these actions inflict on their environments, threatening to make them extinct.

What is the Atlantic Ocean's biggest animal?

Surprisingly, the answer to that is not a whale. It’s the Lion Mane Jellyfish. Found in the cooler regions of the Atlantic, with its tentacles, the Lion Mane Jellyfish can reach a length of 120 feet. These almost-translucent creatures are 94 percent water.

What fish can I catch in the Atlantic?

The facts are the Atlantic is a rich resource for fishing. You can get bites on Atlantic cod, red fishes, herring, mackerel, halibut, crabs, lobsters, prawn, pink shrimps, and much, much more.

How many fish are there in the world?

The scientific community puts the best estimate at more than 34 300 species of fish. And there are probably more because many portions of the planet’s waters have not been thoroughly investigated. The North Atlantic is responsible for close to 20 percent of the global fish population.

Do animals in national waters migrate?

Yes. Many wildlife, such as dolphins, whales, and seals, migrate to colder waters during warmer parts of the year. They seek out rich feeding areas and store fat for the winter. They’ll then return to the Atlantic in the winter to mate and raise their young.