Purple sea urchin, spawning, releasing gametes into the ocean currents. Once adult purple sea urchins have reached sexual maturity, females and males release gametes into the ocean, a mode of external fertilization. The fertilized egg later settles, and begins growing into an adult.
Species: Purple urchin, Strongylocentrotus purpuratus
Image ID: 05346
Kelp holdfast attaches the plant to the rocky reef on the oceans bottom. Kelp blades are visible above the holdfast, swaying in the current. Santa Barbara Island.
Species: Giant kelp, Macrocystis pyrifera
Location: Santa Barbara Island, California
Image ID: 10134