This is the exuvia, or cast-off exoskeleton, of a growing young barnacle

A colony of bryozoans (Membranipora membranacea) on a kelp blade Kelp fronds often carry white spots. Darwin mentioned them, on kelp off Chile, in his bestseller Voyage of the Beagle. This white spot is composed of many cells, grouped around a center. Each cell contains an individual bryozoan, a Lacy Crust Bryozoan or Membranipora membranacea. A single individual is known as a zooid (which is a great scrabble word). Here you can see that the zooids are a filter-feeders, sievi

Blades and air bladders of a macrocystis kelp swirl, as waves pass above.

Spanish shawl nudibranchs are among the most colorful of the denizens of the kelp forest.

Each yellow dot is a lottery ticket. A female Garibaldi laid these eggs a week or so ago, on a mat of red algae meticulously prepared by a male. The male then fertilized the eggs, and now guards them.

If a male Garibaldi works hard enough, his algae patch will impress females enough that they will pause to lay their eggs there.