Hooded Nudibranch Season

Early fall brings the arrival of an unusual Pacific Northwest creature, Hooded nudibranch, (Melibe leonina).

Hooded nudibranch (Melibe leonina) by Eva Funderburgh Hollis

Hooded nudibranch arrive for a few weeks in September/October in large numbers, clinging to eel grass and kelp, and feeding on small larva and small invertebrates. They catch their prey by extending their hood out and down, wrapping it around the prey, then eat eating it whole. When in danger, Hooded nudibranch can swim long distances by lateral-twisting movements.

During fall, we can sometimes see hundreds of Hooded nudibranch on a single dive. Good bets for dive sites include Redondo Beach and Seacrest Park. At the end of the dive, divers can use their safety stop to observe the Hooded nudibranch in the shallows. Ready to see the many Hooded nudibranch for yourself? Book your guided dive tour today.