Although it is not visible in this shot, there is an open umbilicus and a spiral "tooth" present.
Low tide -.82 rocky intertidal. Pretty big, about 3cm long
Low tide, rocky intertidal
Juvenile spat up by an Ocean Whitefish
most likely the same individual as one found yesterday by @nudibitch
https://www.inaturalist.org/observations/206262007
refound by @tidepooltales today
tiny!! eating sponge?
1 of 3 found on codium, amongst elysia hedgpethi
Egg capsule, 5 mm diameter, of an unkown snail.
Strange little orange hermit crab wearing a piece of sponge as a shell.
Approx 2 mm across, growing on Diopatra tube cap. Leptopecten or Argopecten?
Being carried by Osprey
Juvenile with shell approximately 2 cm long.
When I first spotted this, it's tail was protruding from sand underneath a boulder I had just turned over in a low intertidal pool.
I've heard recently that these have been seen around here. So happy to have spotted this one today!
A weeee baby...oarfish maybe?
I found five individuals, 3 - 7 mm long, on the underside of one boulder in a low intertidal pool; two are pictured here.
Group of 4-5.
Hansen Dam
In an ephemeral pond
Locally it's called the Pacific Seahorse. It was nose down in a patchy bed of eel grass in Glorietta Bay, within San Diego Bay, at about 3:45 in the afternoon. There was a lot detritus on its back, as if for camouflage. It was about seven inches long and looked old.
Carmel Pinnacles State Marine Reserve
-white individual
Mating - undescribed species
Santa Cruz County, California
Found diving in San Diego looks like arminia californica but has different colors
Washed up after the atmospheric river/storms So Cal had.
approx 7mm length, very small. In small pool just north of Bird Rock near the west end
Acanthodoris brunnea was located on sandy substrate. Depth was not measured. Length was not measured. Water temperature was 55 degrees F.
So amazing!
ID as per the image in this paper: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0188-88972012000200009
and http://www.femorale.com/shellphotos/detail.asp?species=Pinna%20rugosa%20Sowerby,%201835
and http://www.gettyimages.com/detail/photo/pen-shell-san-ignacio-lagoon-baja-high-res-stock-photography/106455548
La Paz, B.C.S., Mexico
Large slug (~35 mm) with branched rhinophores and prominent eyespots between them. Cerata covered in tubercles. Body and head have small opaque white spots.
La Paz, B.C.S., Mexico
La Paz, B.C.S., Mexico
Like this one from San Diego, California: https://www.inaturalist.org/observations/13490369
La Paz, B.C.S., Mexico
Three of these, found together under a rock with sparse hydroids. Each only about 2-3 mm - quite small. At first, I thought they might be odd Tenellia albocrusta. (B.C.S. is the southern range limit of C. albocrusta according to Gary’s iNat guide: https://www.inaturalist.org/guide_taxa/933633#ref2)
But the thing that gave me pause was how extensive the opaque white speckles are - extensively down the oral tentacles (not seen in any other photo of C. albocrusta on iNat) and the entire length of the rhinophores. All three had the same markings.
In Camacho-Garcia, Gosliner and Valdes, “Guia del Campo de las Babosas Marinas del Pacifico Este Tropical,” 2005, p. 105, a tiny Cuthona Sp 6 looks like a possibility - the photo isn’t reproduced well, but there seems to be white on the oral tentacles (not mentioned in the text, so I may be seeing something incorrectly) and white spots on the rhinophores are mentioned. I haven’t seen more recent information on this Cuthona.
From TGosliner: "This looks like something entirely new to me! It certainly is not Tenellia albocrusta. The head shape and ceratal color are entirely different. Very cool!"
La Paz, B.C.S., Mexico
Two of these large (35-40 mm) dorids found under an intertidal rock. Yellowish with dark grey blotches, wide mantle. Dorsal tubercles mostly short and dense, with longer papillae more widely interspersed.
La Paz, B.C.S., Mexico
Maybe something like Hoploplana @nudibitch?
1mm. Shown on gloved finger for scale.
"Moisturise Me! Moisturise Me!" Lady Cassandra O'Brien, Dr. Who
La Paz, B.C.S., Mexico