There are millions of different animal species in the ocean, but only a few hold the distinction of being some of the largest sea creatures on the planet. Here you’ll see enormous squid, massive sharks, and whales that could dwarf even the most monstrous things we could ever imagine. These are the largest of the large water animals. These are the Biggest Sea Creatures in the World.
Learn about the BIGGEST of everything Monday, Wednesday, and Friday just subscribe!
7. Colossal Squid
These scarily large squids are also often called the Cranch Squid or the Antarctic Squid, and they’re thought to be the largest squid species by mass on Earth. They inhabit pretty much the entire Southern Ocean, from thousands of miles north of Antarctica to southern South Africa, New Zealand, and South America. As of now, estimates put their maximum size somewhere between 39 and 46 feet (12-14 meters) in length and their max weight around 1,650 pounds (750 kilograms). Do you want to hear something else that’s scary about them? Their limbs are lined with sharp, swiveling hooks, which they’re thought to use for hunting and protection. Yikes.
6. Basking Shark
This big ol’ shark is the second largest living shark on the planet, behind just the whale shark. Said whale shark, the megamouth shark, and the basking shark are the only three plankton-eating shark species. They use their vast, gaping mouths to corral and ingest the plankton, which they filter from the water with their gills. The largest ever found specimen of basking shark was located in the Bay of Fundy in Canada back in 1851. The shark measured 40.3 feet (12.27 meters) and weighed roughly 18 short tons (16 long tons). On average, though, the sharks measure around 20 to 26 feet (6-8 meters) and weigh just 5.7 short tons (5.1 long tons).
5. Whale Shark
These slow swimming sharks are the largest extant fish species and are classified as filter-feeding carpet sharks. That means that they filter particles and small animals such as plankton, fish eggs, krill, copepods, and more from the water to keep themselves fed and full. The big animals are found in basically all of the temperate and tropical seas all over the world, but don’t worry; even though these sharks are enormous, they pose no real threat to humans. In fact, younger whale sharks are known for being gentle and even playing around with divers. The average adult whale shark measures around 32 feet (9.8 meters) and 20,000 pounds (9 tons). The largest ever specimen caught was 41.5 feet (12.65 meters) long and weighed 47,000 pounds (21.5 tons), and it was caught in Karachi, Pakistan, near Baba Island on November 11, 1949.
The next fish we’re going to look at belongs to the very small family Regalecidae, and are large, elongated lampriform fish that are typically found in the pelagic zone. They’re located in most tropical and temperate oceans around the world but are rarely seen by humans. There are three different kinds of oarfish, but the giant oarfish is what we’re focusing on here as it’s the longest bony fish on Earth and grows to around 36 feet (11 meters) in length. There are, however, unconfirmed reports of oarfish reaching 56 feet (17 meters) long and weighing upwards of 600 pounds (270 kg)! They eat shrimp, plankton, euphausiids, and other crustaceans.
3. Sperm Whale
Also known as the cachalot, the sperm whale is the largest toothed predator and the largest of the toothed whales. They have an extensive range and migrate all over the place for breeding and feeding seasonally, and they don’t stay in one place for too long. Mature males usually grow to be around 52 feet (16 meters) long, although some can reach up to 67 feet (20.5 meters). Did you know that the head of the sperm whale makes up approximately one-third its total length? What a strange looking creature. In history, they’ve been said to be bigger than the 67 feet that they can reach today. The Nantucket Whaling Museum claims they have the 18-foot jawbone of a creature that once spanned 80 feet (24 meters). The whale that sank the Essex, an American whaling ship, in 1820, was thought to be 85 feet (26 meters) long.
2. Lion’s Mane Jellyfish
This supremely big jellyfish is also known by the names hair jelly and giant jellyfish, and it’s the largest known jellyfish in the world. It's generally bound to the northern Pacific Ocean, northern Atlantic, and the boreal waters of the Arctic. The jellyfish found in the far north are typically significantly larger than those found farther south, with a bell diameter of 6 feet 7 inches (2 meters) versus just 20 inches (50 centimeters). They also have long, thin tentacles that can reach up and over 100 feet (30 meters) or more, and the specimen with the longest tentacles we know of came in at 120 feet (37 meters). They’re often found measuring longer than blue whales, so they have the distinction of being one of the longest animals in the world.