Monterey Dorid - nudibranch

Monterey Dorid (Doris montereyensis) - This nudibranch is sometimes referred to as a "sea lemon." The three Monterey dorids in this video were found off of a dock in Los Angeles County, CA. According to iNaturalist, their range is from Alaska down to Baja California in Mexico.

Some facts from @marinesanctuaryfdn :
-This nudibranch's color comes from the sponges it eats. They use their radula( anatomical structure for feeding) to file the sponge's flesh from the rocks or other structures to which they are attached (like the dock piling in this video).
-They are typically found in shallow areas, but can live as deep as 300 feet below the surface.
-At the front of the sea lemon are two fleshy "horns" or rhinophores used for scent and taste reception and along its back are feathery gills which are used for breathing. The feather-like structure is a key characteristic that differentiates dorid nudibranchs from other types of sea slugs like aeolids which have finger-like projections called cerata instead of a gill plume.
- Like all other nudibranchs, this dorid has the ability to produce sperm cells and egg cells, which allows them to mate with any other Monterey dorid they encounter.