“It was the largest I have ever seen on the beach – three and one half feet in diameter. I measured it,” Sasanoff said.

And yes, the world’s largest jellyfish do sting – just check out the colorful red and orange tentacles on that guy.

According to Wikipedia:

Lion’s Mane Jellyfish is the largest known species of jellyfish in the world.

Its range is confined to cold, boreal waters of the Arctic, northern Atlantic and northern Pacific Oceans, seldom found farther south than 42°N latitude.

The Arctic Lion’s mane jellyfish is one of the longest known animals; the largest recorded specimen had a bell (body) with a diameter of 2.3 m (7 feet 6 inches) and the tentacles reached 36.5 m (120 feet). It was found washed up on the shore of Massachusetts Bay in 1870. This specimen was longer than a blue whale, which is commonly considered to be the largest animal in the world.

A common species, the lion’s mane jellyfish is well known to divers for its painful, but seldom fatal stings; they are toxic and can cause severe burns. Most encounters cause only temporary pain and localized redness. Although this species is potentially dangerous, only one person has ever been reported to have been killed by this type of jellyfish.

Here’s a video of one of these guys swimming in TTP waters that we previously posted from Youtube user and area diver m4jwilliams:

Click here to view the embedded video.

Click here to view the embedded video.