There’s still so much mystery regarding the ocean. All of its vast, murky depths have yet to be explored, but we do at least know there are some terrifyingly gigantic creatures lurking about down there. Some of the largest ocean animals are among the biggest creatures anywhere on earth, reaching massive sizes you won’t believe. Check out the list below to learn about the biggest things in the ocean (that we know of).
Lion's Mane Jellyfish
Even SpongeBob would avoid this jellyfish, as it can reach sizes of up to 120 feet!
The largest whale species, the blue whale can reach lengths of about 110 feet. see more on Blue Whale
Not as big as a blue whale, but still, 59 feet is nothing to scoff at. see more on Sperm Whale
Although nonthreatening to anything but plankton, these worm-like sea creatures can reach over 50 feet in length!