Tag

Invertebrate

Photo of a Corynactis Anemone

Invertebrate, Marine Life, Underwater Life

The Long Beach Aquarium of the Pacific recently arranged to use one of our photographs of the tiny Corynactis californica anemone for a huge wall mural, to be hung in the coming month. It reminded me of how cool these small creatures are, and how many times I have hunkered down on the reef to spend a dive photographing them.

The club-tipped anemone, or corynactis anemone (Corynactis californica), is common in the nearshore environment in Southern California and Baja California. Its range extends north to at least Washington. Corynactis californica is not a true anemone, but rather a Corallimorph cnidarian. One of the distinguishing characteristics of these corallimorphs is that their tentacles, which are not fully retractable, end in knobs resembling clubs (hence the name club-tipped anemone). Corallimorphs have a number of physiological similarities to hard corals but lack the hard coral skeletons of corals. The corynactis anemone is often found in large groups covering rocks, wrecks, piers and other hard substrate to which it can cling. These groups take on beautiful colors: pink, red, orange, blue, purple. Corynactis californica can reproduce asexually by longitudinal fission in which case all clones will take on the same color.

Polyp of a strawberry anemone (club-tipped anemone, more correctly a corallimorph), Corynactis californica, San Miguel Island

Polyp of a strawberry anemone (club-tipped anemone, more correctly a corallimorph).
Image ID: 01039
Species: Strawberry anemone, Corynactis californica
Location: San Miguel Island, California, USA

Strawberry anemones (club-tipped anemones, more correctly corallimorphs), Corynactis californica, Scripps Canyon, La Jolla, California

Strawberry anemones (club-tipped anemones, more correctly corallimorphs).
Image ID: 02487
Species: Strawberry anemone, Corynactis californica
Location: Scripps Canyon, La Jolla, California, USA

A cluster of vibrantly-colored strawberry anemones (club-tipped anemone, more correctly a corallimorph) polyps clings to the rocky reef, Corynactis californica, Santa Barbara Island

A cluster of vibrantly-colored strawberry anemones (club-tipped anemone, more correctly a corallimorph) polyps clings to the rocky reef.
Image ID: 10165
Species: Strawberry anemone, Corynactis californica
Location: Santa Barbara Island, California, USA

Keywords: club-tipped anemone, corynactis anemone, Corynactis californica, corallimorph

Photo of Hermissenda Crassicornis Nudibranch

California, Invertebrate, Monterey, Underwater Life

This photo of a Hermissenda crassicornis, also known as an “Opalescent nudibranch”, was shot in the early 90’s near Carmel on the Monterey Peninsula. We rented a house in the town of Carmel for a week. Anticipating foggy skies and cold murky water, we did not expect to do much diving. However, surprised with sunny weather and clearer-than-normal water, we made a number boat dives and a few beach dives not far from the house, resulting in a nice variety of invertebrate images including some nudibranchs. This is one of those images.

Nudibranch on calcareous coralline algae, Hermissenda crassicornis, Monterey, California

Nudibranch on calcareous coralline algae.
Image ID: 01064
Species: Opalescent nudibranch, Hermissenda crassicornis
Location: Monterey, California, USA

The Sea Slug Forum has a great fact sheet page on this species. Also, the SlugSite has an excellent species description of Hermissenda crassicornis.

Keywords: nudibranch photo, sea slug, Hermissenda crassicornis, underwater, photograph, Monterey, California, Carmel.