Lion's Mane

Lion's Mane Jellyfish is the largest species. Lions mane can reach 8 feet with tentacles trailing up to 100 feet long. Juveniles are pink, turning red as they mature into reddish brown or purple adults. The largest documented specimen found in Puget Sound was found beached on Whidbey Island ( in 1998 ) and measured 5 feet across the bell.

Like all jellyfish, the lion's mane rides the ocean currents, pulsing its bell to force water out of the bell and push itself in the opposite direction to the current. Its life cycle goes through five stages, including two distinct body shapes (medusa and polyp). During the benthic, or bottom-dwelling stage, they attach to a surface — wood or stone are favorites — feeding with tiny tentacles and cloning new jellies. A single colony of jellyfish can be traced back to a polyp that may have first cloned itself hundreds of years before. Any piling in Puget Sound clothed with what looks like small white polyps may be in fact paved with the polyps of jellies.

In April, bottom-dwelling jelly polyps bud off tiny, baby jellyfish. By July, the juveniles have grown to the adult gobs we know so well. Adult males then release sperm into the water, where it is gathered by females that brood the eggs internally, then release them as ciliated beings no bigger than the head of a pin. These drift to the bottom, where they attach, and begin the life cycle anew.

Most adults die by October, victims of bacterial infection, depleted plankton supplies and the appetites of fish and other predators. Lions Mane Jellyfish typically feed on tiny crustaceans, zooplankton, small fish and moon jellies.

source:emeraldseaphoto.com

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