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Hooded nudibranch (Melibe leonina)

The hooded nudibranch is a species of predatory nudibranch in the family Tethydidae. The body of M. leonina is translucent and is usually colorless to pale yellow or green. The average body dimensions are 102mm long and 25mm wide. This species occurs in the eastern Pacific Ocean from Alaska to Baja California. M. leonina are common on seagrass and blades of Macrocystis kelp within their range, from the lower intertidal to approximately 37m. M. leonina is a simultaneous hermaphrodite, with its female and male reproductive organs located on the right side of the body. Fertilization occurs internally, and individuals can lay up to 30,000 eggs at a time. While most nudibranchs are predators of sessile benthic organisms, M. leonina feeds on planktonic invertebrates. M. leonina is carnivorous and has been observed eating several types of planktonic crustaceans, including amphipods, copepods, ostracods, and various types of larvae.

photo credits: Tentaculata, wiki