There are about 20 species in this family, including the well-known lion's mane jellyfish.

The largest known species of jellyfish is the "lion's mane jellyfish".

Still, lion's mane jellyfish are not necessarily tame.

In addition, he is working on a 5-foot diameter jellyfish modeled after the lion's mane jellyfish.

The lion's mane jellyfish becomes super-bouyant after reproducing and, if near shore, is caught in the pounding surf.

However, in the North Sea at least, the lion's mane jellyfish and the blue jellyfish appear as distinct species.

Sightings include Lion's Mane jellyfish, which possesses one of the most painful stings in British waters.

But the stinging thread tubes of lion's mane jellyfish are unlikely to pierce the thicker skin on bare soles or palms.

Other predators, including Lion's Mane jellyfish and their smaller relatives, drift by while feeding on plankton and minute sea creatures.

Predators of the lion's mane jellyfish include seabirds, larger fish such as Ocean sunfish, other jellyfish species, and sea turtles.

What is known about the lion's mane jellyfish is that they are mostly sexually mature adults that scientists trace to the ocean's deeper reaches.

Lion's mane jellyfish have been observed below 42 N latitude for some time in the larger bays of the east coast of the United States.

Lion's mane jellyfish (Cyanea capillata)

A lion's mane jellyfish that is usually accompanied by a large swarm of normal-sized jellyfish that some say are Medusa's offspring.

The lion's mane jellyfish uses its stinging tentacles to capture, pull in and eat prey such as fish, sea creatures and smaller jellyfish.

The charity warned that lion's mane jellyfish have a powerful sting and anyone taking part in the survey should look but not touch jellyfish that they see.

Still, lion's mane jellyfish hurt when they sting, leaving large red welts or ridged zigzag lines across the skin that mirror the path of lashing tentacles.

The Marine Conservation Society (MCS) said they had received reports around the country, including of the Lion's Mane jellyfish.

The largest type of jellyfish is the Lion's mane jellyfish, which has tentacles that can be as long as 60 meters, but most jellyfish are much smaller.

Lion's mane jellyfish are abundant in the waters of the Arctic, and the banded gunnel is the only species of gunnel that lives in the ocean.

Lion's mane jellyfish have four different stages in their year-long life span: a larval stage, a polyp stage, an ephyrae stage, and the medusa stage.

Especially in late summer, swimmers in the North and Baltic Seas often encounter lion's mane jellyfish, which are known as "fire jellyfish," and for good reason.

Teresa Machan, an editor at Telegraph Travel, was stung by a Lion's Mane jellyfish when she was swimming off the south-east coast last week.

At the bathing pond, Holmes spots the murderer: it is a Lion's Mane Jellyfish (Cyanea capillata), a deadly creature about which Holmes has read.

Although lion's mane jellyfish contain toxic proteins and peptides like those in more lethal species, they cause fewer fatalities because their threads shoot out in a curve, slowing penetration.

Lion's mane jellyfish (Cyanea capillata), also known as Hair Jelly and Sea Blubber, are a type of jellyfish which are mostly found in north Atlantic and north Pacific waters.

At the bathing pond, Holmes spots the murderer: it is a Lion's Mane Jellyfish (Cyanea capillata), a deadly creature about which Holmes has read.