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Chrysaora Fuscescens (Pacific Nettle Jellyfish)


This huge, colorful jellyfish roams the northern Pacific Ocean, trapping small animals between its extremely long, stinging tentacles.
It can swim slowly by contracting its bell-shaped body, but usually likes to be carried along by the currents.


Its diameter size reaches up to 76 cm and the length that the tentacles can reach is 4.5 meters.
The jellyfish has only one opening in the body, hidden in the umbrella, from which it swallows food and expels waste. From the central mouth extends a series of jagged oral arms, these oral arms capture prey and guide it towards the mouth. the prey fish is immobilized by the jellyfish's venom.


The venom of the jellyfish can be deadly, but some small fish, such as Peprilus Similimus, are immune: a layer of slimy mucus prevents the stinging cells from penetrating the skin.
These small fish take refuge in their tentacles to escape from their enemies.


Jellyfish life cycle.
The adult jellyfish produces small larvae, called planaria: these grow into flower-shaped polyps that attach to solid surfaces. each eventually becomes a strobilus: a stack of miniature jellyfish, called efires, that attach and swim to grow as adult jellyfish.

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The tentacles and arms of ornamental jellyfish are covered with microscopic cells called cnidoplasts.
Each cell consists of a capsule, inside of which is a hollow filament with a sharp, venomous tip. If a prey hits it, the operculum of the capsule opens, the filament comes out and injects venom into the victim.

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