Dive LOG 790, Tunnels near Haena Pt, Kauai, Thursday July 2, 1981 with Jamie Grant and Barbara Greenlee. Diver with urchin.

Suellen with red urchin (Strongylocentrotus franciscanus) about 0.25mi east of the West End of Anacapa, north side. Dive log 1088, Sunday, January 6, 1985 aboard the dive boat Sandy Bay. Air 60F, water 58F, about 60-foot visibility.

Western sand dollars, Dendraster excentricus, close up. Dive log 764, near Santa Monica Pier.

Cancer gracilis crab patrols the outer edge of the western sand dollar bed, Dendraster excentricus, at Zuma Beach.

Western sand dollars, Dendraster excentricus, form a bed near the Santa Monica Pier. Dive log 797.

Extreme close up, western sand dollar, Dendraster excentricus, aboral surface showing petaloid. Log 745, Santa Monica Pier.

Western sand dollars, Dendraster excentricus, extreme close up, oral side showing ambulacral (feeding) grooves and mouth. Dive log 764, Santa Monica Pier.

Diver approaching inside edge of western sand dollar bed, Dendraster excentricus, near Santa Monica Pier. Dive log 846.

Western sand dollar, Dendraster excentricus, extremely close up view of mouth and oral spines. Dive log 763, near Santa Monica Pier.

Western sand dollars, Dendraster excentricus, aboral view. Dive log 757, Santa Monica Pier.

Western sand dollars, Dendraster excentricus, edge view. In bottom left corner the advancing foot of a predatory moon snail, Pollinices sp, can be seen. Zuma Beach.

White sea urchins, Lytechinus anamesus, from southern California.

White sea urchins (Lytechinus) attack giant kelp stipes (Macrocystis. Dive log 1090, Santa Cruz Island.