Great White Shark
They can smell a single drop of blood floating in 10 billion drops of water. They can detect movement from as far away as 820 feet away. And with powerful, streamlined bodies and razor-sharp teeth, great white sharks are as scary as it gets.
Blobfish (Psychrolutes marcidus)
The Blobfish inhabits the dark depths of the Atlantic, Pacific, and Indian Oceans oceans. This droopy, slimy fish with a gelatinous appearance was named the ugliest fish in the world in a public poll by the Ugly Animal Preservation Society.
The vaquita, or little cow, is a species of porpoise and is perhaps the most endangered ocean creature on the planet. They live in the Gulf of California and there are less than 30 of them left on the planet.
1.Box jellyfish
Considered the most deadly creature in the sea, the box jellyfish may be beautiful to look at, but it has enough venom to kill a human in a matter of minutes. Native to Australia and found in Indo-Pacific waters, the box jellyfish has around 15 tentacles that can reach lengths of upto three meters.
While the blue whale is the overall-largest creature of the sea, the lion's mane jellyfish goes to the top of the list for being the longest. These languid beauties have tentacles that reach an astonishing 120 feet in length. 3 It's hard to know why they are graced with such extraordinary appendages.
Unlike other cryptids which exist only in our imaginations even today, the kraken had the benefit of being inspired by something which actually exists. In 1857, the giant squid was classified as a real living species for the first time, thanks to examinations of their beaks.
Megalodon
Due to its prominent appearance in films and novels, the megalodon is perhaps the most famous extinct creepy sea animal. During the Early Miocene and Pliocene, it lived 23-3.6 million years ago.
Hundreds of years ago, European sailors told of a sea monster called the kraken that could toss ships into the air with its many long arms. Today we know sea monsters aren't real--but a living sea animal, the giant squid, has 10 arms and can grow longer than a school bus.
Megalodon vs.
When it comes to size, the blue whale dwarfs even the largest megalodon estimates. It's believed blue whales can reach a maximum length of 110 feet (34 meters) and weigh up to 200 tons (400,000 pounds!). That's more than twice the size of even the largest megalodon size estimates.
Ocean Quahogs (Clams)
The ocean quahog is a species of edible clam, a marine bivalve mollusk. Ocean quahogs live in the Atlantic and can live more than 400 years old. At 507 years of age, Ming the clam broke the Guinness World Record as the oldest animal in the world.
Sure, the infamously hungry Megalodon was HUGE, at a whopping 69-feet (!), but the still-living Blue whale currently tops it by an incredible 50 feet at an average 120-foot length.
Meet the Stonefish: The World's Deadliest Fish. Introducing the stonefish – one of the deadliest fish in our oceans. With its potent venom, crusty skin and razor-sharp spines, this is one formidable creature, capable of killing a human in a matter of hours when a sting is left unchecked.
Some were very small – the blackest they found, a type of anglerfish called a dreamer, was only two inches long. It uses ultra-blackness to hide so it can prey on even smaller fish and crustaceans attracted to the bioluminescent lure that dangles from its forehead, Davis said.
Goliath Tigerfish lives in Africa and is an extremely large predatory hardest freshwater fish. Because its range is limited to the Congo, it is very hard to find. Jeremy Wade hosted a special about it in Animal Planet which documented his journey to catch one.
The Pacific Ocean, the largest and deepest ocean on Earth, is home to some of the most dangerous waters in the world. Its vast expanse and diverse ecosystems make it a breeding ground for various threats, both natural and human-made.
The finding, published in Science, suggests that a reservoir of water is hidden in the Earth's mantle, more than 400 miles below the surface. Try to refrain from imagining expanses of underground seas: all this water, three times the volume of water on the surface, is trapped inside rocks.
It's thought that megalodon sharks became extinct in part due to climate change: as oceans grew colder, they may not have been able to regulate their temperatures as needed. Lack of prey could be behind the megalodon's extinction, as many marine animals and fish could not survive the cold temperatures.