The Top 11 Biggest Ocean Animals

 LION’S MANE JELLYFISH These jellyfish are possibly the largest in the world and live in the Arctic Ocean, the Pacific Ocean, and the northern Atlantic. Although a stinging from this jellyfish can be quite painful, it is rarely a problem. They live their whole lives in open oceans, eating plankton and small fish. 

SPERM WHALE The sperm whale is the largest toothed whale and the only member of its genus. It holds a special place within our imaginations. Fully grown males can grow to nearly 70 feet in height and reach 41 tons (or 82,000 pounds). They can dive for their favorite food, squid, more than a mile below the ocean's surface.

BLUE WHALE Blue whales are the largest whales and the most powerful animals on the planet. These gentle giants eat tiny krill almost exclusively. 

WHALE SHARK The largest fish in the world is also one of the most gentle. Whale sharks can grow to more than 60 feet in length and are not considered dangerous to humans. Divers can even grab onto their dorsal fins to ride the whale shark. The world's largest whale shark population lives in tropical waters.

GIANT SQUID The maximum size of this animal is estimated to be 43 feet in length. Evidence of giant squids has been found throughout the oceans. The sperm whale is the only predator. These squids can live so deep that they almost never see live adults.

BASKING SHARK This fish measures 26 feet in length and is second only to the whale shark. Basking sharks can be found in all the world's temperate seas. It is a filter feeder, which eats plankton as well as other small creatures.

GIANT PACIFIC OCTOPUS This octopus is native to the North Pacific coast and can reach up to 110 lbs. It can also span more than 20 feet when its tentacles are extended. Some records show that individuals weighed more than 300 pounds.

OARFISH Many scientists believe that the longest bony fish in the world is responsible for most sea serpent sightings and stories. Although lengths up to 9 feet are not uncommon, the record is 26 feet and the maximum weight recorded is 600 pounds. It is believed that it eats krill and small squid. Their behavior and lifestyle are unknown.

OCEAN SUNFISH The ocean sunfish is one of the largest bony fish and has a flattened body and a very small tail. They can be found in both tropical and temperate water around the globe and eat fish, larvae and crustaceans. Their name comes from the fact that they float on their sides below the surface of the water to soak up the sun.

JAPANESE SPIDER CRAB These marine crabs have the longest legs of any arthropod and are among the largest invertebrates. Their length can reach 12 feet from one end of their legs to the other, and the carapace can measure up to 16 inches. Japanese spider crabs can eat up to 42 pounds.

GIANT MANTA RAY This ray is 23 feet in diameter and weighs 6,600 pounds. It eats plankton, just like many other large fish. Plankton makes up only a third of the diet. Rest of the diet is made up of deep-water fish. They can be found in all of the oceans except for those in temperate and tropical waters.