Hundreds of brown sea nettles were observed along west Tomales Bay.
Oil Slick Leap dive site.
Under a ledge in a place difficult to photograph without being smushed into rocks.
Introduced to the Caribbean in 1943, according to Humann & Deloach's book, which has a nice map of distribution over time.
Oil Slick Leap dive site.
Cnidaria (pronounced /naɪˈdɛəriə/ with a silent c) is a phylum containing over 9,000 species of animals found exclusively in aquatic, mostly marine, environments. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. They have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with...
