Image:Zooplankton1 300.jpg

Medusae

This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration.

• Photo: Shane Anderson.
• Printing resolution: 300 DPI.
• Downloaded from http://www.sanctuaries.nos.noaa.gov/pgallery/pgchannel/habitats/habitats_15.html.
• Leyend: We don't often think of the open water as "habitat" but many species live all or part of their life in the open water. Planktonic jellyfish Medusae (Medusae) drift in the water column and move by contracting the muscles within the bell-like structure creating pulse-like movements. The tentacles contain harpoon-like stinging cells to capture small planktonic shrimp and crabs.