Our Privacy/Cookie Policy contains detailed information about the types of cookies & related technology on our site, and some ways to opt out. By using the site, you agree to the uses of cookies and other technology as outlined in our Policy, and to our Terms of Use.

Close

The Jellyfish's Ecosystem & Its Specific Habitat

| Updated October 19, 2017

Jellyfish contain 95 percent water, are semi-transparent and come in a broad range of colors, sizes and shapes. Their tentacles catch drifting food and carry it to their mouth that is inside of their bell shaped body.

Ecosystem

Jellyfish play an important role in the oceanic food chain and the ecosystem. Jellyfish are carnivorous and feed mostly on zooplankton, comb jellies and other jellyfish. Large species of jellyfish feed on large crustaceans and other marine organisms. Sea turtles, sunfish and spadefish prey upon jellyfish. The cannonball and mushroom jellyfish are a delicacy in Asia.

Habitat

Jellyfish occupy every major ocean in the world but primarily live throughout the Indo-Pacific and in coastal waters off Northern Australia. Jellyfish are adept at withstanding a broad range of salinities and temperatures. Many live in shallow coastal waters and drift with the currents, often gathering in estuaries and secluded bays.

Movement

Jellyfish are sensitive to light and move down to deeper waters during the hours of bright sunlight. Jellyfish move closer to the surface in the early morning, late afternoon and evening. Because of their limited horizontal movement, jellyfish largely depend upon ocean currents, tides and wind for motion.