Chrysaora
Chrysaora is a genus of jellyfish belonging to the family Pelagiidae. They are commonly known as sea nettles or compass jellyfish, although the latter term also refers to the species Chrysaora quinquecirrha. Chrysaora species are known for their distinctive appearance, featuring a dome-shaped bell with tentacles that can sting and paralyze prey.
Characteristics
Chrysaora jellyfish exhibit a range of characteristics that distinguish them from other jellyfish genera. Their bells can vary in size and color depending on the species, but are typically translucent with a brownish or reddish hue. They possess long, trailing tentacles armed with nematocysts, specialized stinging cells that deliver venom. The tentacles are arranged in a radial pattern, resembling the spokes of a wheel.
Environments
Chrysaora jellyfish are found in a variety of marine environments, including coastal waters, estuaries, and open oceans. They prefer warmer waters and are often seen in areas with high plankton densities, their primary food source.
Species
The Chrysaora genus includes several species, some of the most notable being:
- Chrysaora quinquecirrha (Sea Nettle or Compass Jellyfish): Found in the western Atlantic Ocean, with a distinct "compass" pattern on its bell.
- Chrysaora hysoscella (Mediterranean Jellyfish): Common in the Mediterranean Sea and adjacent waters, known for its long, trailing tentacles.
- Chrysaora colorata (Purple-striped Jellyfish): Found in the Pacific Ocean off the coast of California, distinguished by its purple stripes.