A nudibranch Acanthodoris lutea is shown here laying an egg ribbon, in a tide pool in California. Nudibranchs are hermaphrodites, and therefore all adults are capable of laying eggs.
This species is commonly known as the "orange peel doris" because of its striking coloration, which is an example of aposematism. The bright orange color serves as a warning signal to potential predators because this nudibranch is toxic. When it is handled, it gives off a chemical which smells like sandalwood.