I found 10 of these, 2 to 4 mm long, on a very fine, filamentous green alga in a shallow, high intertidal rocky pool amongst patchy salt marsh.
Specimens match Gould's (1870) description and illustrations of this species (as Calliopaea fuscata) from Boston Harbor.
Found in low intertidal at Punta Mita. Largest specimen was 33 mm long. Image taken by Jim Lance of specimens he and I collected in February 1985. Scanned from a 35 mm slide.
Apata cf. pricei of Behrens et al. (2022), Coleman Beach, Sonoma Co., CA, 29 Apr 2009. 15mm length.
CASIZ 181322 (as Flabellina)
Photos by Gary R. McDonald (@mcduck) of a specimen I found in the low rocky intertidal in the morning, collected, kept cool and then dropped off in Aromas, CA for Gary to photograph using his home aquarium setup, which he did that evening. Gary later relaxed and preserved the specimen and sent it to the Invertebrate Zoology collection at the California Academy of Sciences. Scanned from 35 mm slides.
Brenna Green (@lemurdillo, who had joined me for the low tide) and I were looking at this specimen in the field after I found it and were perplexed by its identity. We decided it was closest to Flabellina pricei (now Apata pricei), but the differences in color from the few other specimens of F. pricei I had seen, warranted its collection, and I labelled the specimen as Flabellina (pricei?).
iNatting with @emma_brockes.
Both length 4 mm when extended.
Low intertidal. Found by sieving through red algae and brown algae (Image #5 #6) growing on a wall of a shallow crevice on the reef.
Placida?
Sponge crab? Shell was soft to the touch.
Eureka. Could this be the adult associated with laying all these egg coils?https://www.inaturalist.org/observations/218714497
I observed it for no more than a few minutes. It was about two feet away from three new egg coils. It left no trail as it wandered and circled a small area. It then decided to burrow: simply dipping into the soft sediment and within seconds it vanished without a trace, trail, or detectable hole.
~1-2 inches long, pronounced skirt, traveled quite quickly, lengthy oral tentacles.
My first one.
Found by @Mari_co. A couple feet away from Monterey Dorid.
Shown as found, on hydroid Abietinaria underneath a rock ledge at low tide.
We found a dozen of these, up to 75 mm long, and with their egg ribbons, under intertidal cobbles in the outlet of the shallow lagoon backing Playa Pichilingue. The 6th image is of the site, taken in Feb 2020, when I returned and searched for but did not find any C. bramale.
These specimens represent the first record of this Panamic species from the the Sea of Cortez and the Baja California peninsula. It was not recorded by Orso Angulo-Campillo during his four year survey of opisthobranchs from Baja California Sur, including the La Paz area (Vita Malacologia 3: 43-50, 2005).
We documented the occurrence of C. bramale here in Goddard et al. (2018, Proceed. Calif. Acad. Sci. 65: 107-131, p. 112).
About 20 mm long, found under a low intertidal cobble.
@jeffgoddard Is this a particularly lovely D. venustus or something else? Prominent white tips and proportionally stout rhinophores, no white line on foot. Dots were larger than normal for D. venustus and white, not yellow. About 15 mm Found by @seaslugin; here's her photo: https://www.inaturalist.org/observations/58060058.
Undescribed species, 22 mm long. I spotted this specimen on its flat, coiled egg mass (also see 2nd image) on a pebble grabbed with gray mud from 186 m depth off Cape Alava, WA while on a cruise AR-04-04 of the NOAA Ship McArthur II in June 2004. The translucent dorsum was finely scabrous to the touch. The 4th image is an SEM, made by Sandra Millen (UBC), of some of its radular teeth. Sandra confirmed this as an undescribed species and last I heard had been well along in describing it. The first three images were scanned from prints I took shipboard using 35 mm film. The specimen, including two SEM mounts, was deposited by Sandra Millen in the California Academy of Sciences (CASIZ 176807).
Tiniest I've ever seen, around 1mm, and the little spots are a new one for me
Several adults observed feeding on Bubble snail eggs. Potential egg coil of this species, but not positive.
I'm at a total loss on this one. Looks just like a stretched out Elysia, but in the Macrocystis canopy, no Codium around anywhere and doesn't look like E. hedgpethi to me.
Three of eight found this morning. I haven't ever noticed R. pulchra with a pinkish hue before.
Only a few mm long; found on Codium fragile. Unlike Placida dendritica, this undescribed species has simple (not rolled) rhinophores. It appears to be the same species as specimens I found earlier in the same year on Codium fragile at Punta Rosarito, Baja California (http://www.seaslugforum.net/showall/stilsp1). Scanned from prints from 35 mm film.
Eubranchus sp. 2 of Behrens & Hermosillo (2005). Found by Ziggy and the first record of this species outside of La Jolla. Compare to: https://www.inaturalist.org/observations/2958115
In Behrens et al. (2022) this is Eubranchus sp. 1.
6.8 mm long. Found in a shallow, low intertidal pool at South Casa Reef. CASIZ 189422.
This is Eubranchus sp. 2 of Behrens & Hermosillo (2005), which so far is only known from La Jolla, California and remains undescribed. Note: in April 2021 we found one at Tar Pits Reef in Carpinteria, Santa Barbara County: https://www.inaturalist.org/observations/75602522
The white patch on the head, reddish hepatic region, white anal papilla, and rings of papillae on the cerata are distinctive.
The 3rd and 4th images show egg masses, containing early and late-stage embryos, respectively, laid by adult pictured here. The last image shows a newly hatched veliger larva, right lateral view, with a shell 210 microns long.
realizing now there may have been a 3rd right behind this one, didn’t notice it!!
species 1 Behrens et al
spotted by @tidepooltales
La Paz, BCS, Mexico
Found by @chilipossum
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.
Photographed by my colleague and fellow nudibranch aficionado Dr. Tara Prestholdt, Professor of Biology, University of Portland, who found this with her students on one of her popular, week-long field trips on the Oregon coast.
Tara kindly gave me permission to post this and the next photo, as this one is the northernmost existing record of C. spadix, and the next one shows that it can co-occur at the same site with its sister species.
Note: when Tara finds the time to start her own account on iNaturalist, and posts these same images, I will delete them from my account; for now we just wanted to make her pair of observations publicly accessible.
short video clip
https://youtu.be/WsYRxHOnE8E
Found diving in San Diego looks like arminia californica but has different colors
Moving this observation from my school account to my personal one
Holotype (CASIZ 182590), 33 mm long as shown here, on which Terry Gosliner based his 2010 description of this species (as Flabellina goddardi). I found it on a calm and bright overcast morning crawling in the open in a low intertidal pool at Tar Pits Reef. The 2nd image shows the egg mass, 14 mm in diameter, laid by this individual on 10 May 2008. The uncleaved zygotes averaged 65 microns in diameter, were packed one per capsule, and took 7 days at an average of 16 degrees C to develop into hatching planktotrophic veligers. The 3rd image shows, in right ventro-lateral view, one of the veligers just prior to hatching and with a shell 105 microns long.
Unlike most specimens of this species observed subtidally, individuals found intertidally vary in possession of white lines on the body and cephalic tentacles from completely absent (as in this specimen) to incomplete, to complete. With those white lines, subtidal specimens have occasionally been mistaken for Coryphella trilineata.
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!"
Found by Karen! Video showcasing big beating heart and what looks like a defensive cerata flare: https://flic.kr/p/2pB8Jt3. ~ 4-5mm.
1mm. Shown on gloved finger for scale.
protoconch present
whorls shouldered
axial ribs without spiral sculpture
axial ribs extend beyond periphery of last whorl (?) hard to tell
the culprit of the mystery egg sacs!!??? it was in the sea grass burrowed next to several egg masses!!
@jeffgoddard @alanarama3
last photo is not the exact eggs it was next to, just one of many seen that day, but the same type of egg mass
cruising on the sand next to fairy palm hydroids!!
who is this? super long vercose rhinophores, single broken line down the midline, frosted oral tentacles and rhinophores, speckled cerata. weird cooperi?
@anudibranchmom @jeffgoddard
missing a tentacle and a little roughed up
undescribed species, first intertidal observation im aware of!
https://www.inaturalist.org/journal/nudibitch/88226-mystery-flatworms-black-midline-black-tentacles
??
ceratal core color seems too dark but rhinophore type matches...ANOTHER great Liz find
On Leptogorgia chilensis
Catriona? As with the first individual (observed on a different dock), found nestled deep within a mass of hydroids, the fronds of which were populated by a multitude of tiny Orienthella trilineata.
Photo license and credit belong to the Florida Museum of Natural History (FLMNH), the Hakai Institute, and MarineGEO | http://specifyportal.flmnh.ufl.edu/iz/ | Field Number: BHAK-6472 | This observation is a part of the collaborative work between FLMNH, the Smithsonian Institution's Marine Global Earth Observatory (MarineGEO) and Tennenbaum Marine Observatories Network, the Smithsonian's National Museum of Natural History, and the Hakai Institute
5 mm long. This is the southern form, with the orange lines on the body, described by MacFarland (1905) as Ancula pacifica. Found in northern Oregon during the strong 2015-16 El Nino.
from Santa Cruz County, California.
Here we go again! I sure appreciate everyone's help on these.
Cerrata: beige, tipped with white, darker brown at the base, with both white and brown specks
BEST GUESS: A beige Catriona rickettsi (looks like this one photographed by David Behrens: invasions.si.edu/nemesis/calnemo/SpeciesSummary.jsp?TSN=7...)
EVEN MORE photos, for the truly dedicated, are on Flikr: https://flic.kr/s/aHsktBR2c1
UPDATE 2/2/2016: "Probablys" from Brenna and Jeff Goddard. ;-)
Under log in Quercus agrifolia leaf litter