Barnacle-Eating DoridOnchidoris bilamellata
(1-4: San Carlos Beach, Monterey / 5: Monterey State Beach, Monterey)
These congregate in huge numbers to eat barnacles, mate and lay eggs. Note the carinate dovesnails eating the nudibranch eggs.
Black DoridPolycera atra
(1-8: Monterey State Beach, Monterey)
These are less than an inch long. The 5th picture shows a tiny one on a maroon hermit crab. Under natural light, the orange stripes look gray, so they blend into their environment.
Branched DendronotusDendronotus frondusus
(1-2: Monterey State Beach, Monterey)
Brown Horned DoridAcanthodoris brunnea
(1-3: San Carlos Beach, Monterey)
California ArminaArmina californica
(1: San Carlos Beach, Monterey)
California ChromodoridHypselodoris californiensis
(1: Golf Ball Drop Off, Santa Cruz Island)
Catalina Triopha(aka Clown Nudibranch)
Triopha catalinae
(1,3,5,7-8: San Carlos Beach, Monterey / 2: Whaler's Cove, Point Lobos / 4: Golf Ball Drop Off, Santa Cruz Island / 6: Lovers Point, Monterey)
This one is laying eggs:
(1: San Carlos Beach, Monterey)
Cockerell's DoridLimacia cockerelli
(1,3-6,8-9: San Carlos Beach, Monterey / 2: Whaler's Cove, Point Lobos / 7: Monastery Beach, Carmel-by-the-Sea)
These are feeding on bryozoans: (1-2: San Carlos Beach, Monterey)
Diamondback TriophaTritonia festiva
(1-6: Whaler's Cove, Point Lobos / 7: Monastery Beach, Carmel-by-the-Sea)
Small; only 1" long.
Heath's DoridGeitodoris heathi
(1: Whaler's Cove, Point Lobos, CA)
Hilton's AeolidPhidiana hiltoni
(1,4: Whaler's Cove, Point Lobos / 2-3: San Carlos Beach, Monterey)
Hopkins' Rose NudibranchOkenia rosacea
(1,4,8: Whaler's Cove, Point Lobos / 2-3,5-7: San Carlos Beach, Monterey)
They eat rosy bryozoan: (1: San Carlos Beach, Monterey)
The Limbaughs' CadlinaCadlina limbaughorum
(1: West of Santa Barbara Island / 2: Golf Ball Drop Off, Santa Cruz Island)
Lion's Mane NudibranchMelibe leonina
(1-2: San Carlos Beach, Monterey / 3-8: Monterey State Beach, Monterey)
These are common on eel grass and kelp in Monterey. They also occasionally float around freely, wiggling back and forth.
These ones are laying eggs: (1: San Carlos Beach, Monterey)
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