Sea Life

What Are Some Of The Largest Sea Creatures?

What Are Some Of The Largest Sea Creatures?

The water covers more than ⅓ rd of the globe, hiding a million creatures that live in extreme depths. Some of these creatures are so small that one cannot see them with the naked eye however, some specimens are large enough to keep a hold and maintain the ecosystem. Some of the incredibly largest sea creatures are explained below.

What Are Some Of The Largest Sea Creatures?

Several species thrive under the water and are unbelievably larger. Here is a list of some of the largest sea creatures.

1: Lion’s Mane Jellyfish

This species of jellyfish is the largest creature because of its extended tentacles. The size of jellyfish measures a size of 120 feet or 36.6 meters in length and is about 200 pounds heavy. They also have long manes which look like a lion – a reason behind the name.

2: Blue Whale

You must be familiar with blue whales because these are the largest sea creatures that live deep in the open waters. They have an incredible length of 108 feet and weigh around 330,000 pounds. Interestingly only the heart of these specific measures is 1,500 pounds. Blue whales prefer krill in their diet to keep them healthy.

3: Sperm Whale

These whales measure up to the size of 60 feet or 18 meters and weigh around 90,000 pounds. They have an enormous heads with large sharp teeth giving them a quite scary look. These creatures are found in almost all the oceans of the world and prefer to live deep in the ocean despite being social and friendly creatures.

4: Whale Shark

The next on the list is the Whale shark which can grow to a length of 39 feet or 12 meters with a weight of 30,000 pounds. Tropical waters are the favorite destination for whale sharks to thrive. Interestingly, they can open their mouth up to 4 feet to gulp the prey easily.

5: Basking Shark

One of the popular species of the Pacific and the Northern Atlantic Oceans is the basking shark. These sharks fall 5th in the row of largest sea creatures because they have a maximum length of 22 to 29 feet or weigh about 10,000 pounds, ever recorded. Further, they are known to be the deadliest creatures that have attacked many people.

6: Giant Squid

These squids have gained attention because of their incredible size as they have a length of 43 feet or 13 meters with a weight of 606 pounds. They live deep in the water, in the extreme darkness which is why they have been rarely seen by the people.

7: Giant Pacific Octopus

The giant octopus is the largest member of the family with a size of 16 feet or 4.9 meters and weighs approximately 600 pounds. They catch prey with their 8 arms extended radially in all directions. Each arm has suction cups which also aid in hunting and feeding.

8: Oarfish

These are the mysterious creatures that live in the extreme depth of the ocean, making it difficult for researchers to study them in detail. The Oarfish belongs to a bony fish family but has an eel-like appearance, with a remarkable length of 36 feet or 11 meters and 600 pounds weight.

9: Ocean Sunfish

The elusive and most fascinating deep-sea creature is the Ocean sunfish, which belongs to a group of bony fish and has a length of 10 feet and 500 pounds weight. They have a flat body with a round head, short snout, sharp teeth, and unique rounded dorsal fins. They are slow swimmers but are agile and powerful jumpers.

10: Japanese Spider Crab

As the name shows that this species of crab is native to the coastal regions of Japan and lives deep in the ocean. They have a maximum size of 12 feet or 3.8 meters and weigh 40 pounds. They have long extended legs, which are covered with spines, providing them protection from predators.

Final Verdict

Among all the largest deep-sea creatures, Lion’s Mane Jellyfish is the biggest followed by Blue Whale, Sperm Whale, Whale Shark, Basking Shark, Giant Squid, Giant Pacific Octopus, Oarfish, Ocean Sunfish, and Japanese Spider Crab. Not only these but there are several other giant creatures hiding in the depths of the ocean, far from the sight of humans.

About the author


I am a Scholar and a dedicated content writer. I am on a mission to stamp out the importance of one of the ocean's most fascinating and remarkable creatures, the sharks, and to let people know about their role in keeping the ecosystem in equilibrium.