Photos / Sounds

What

Aeolid Nudibranchs (Superfamily Aeolidioidea)

Observer

thetidepooler

Date

December 16, 2023 06:29 PM PST

Place

Bird Rock (Google, OSM)

Description

found by @nudibitch
2nd record of this species! Found at a -.8ft low tide, at night, no wind, no waves

more pictures of this individual: https://www.inaturalist.org/observations/194171352

More pictures of 1st recorded individual: https://www.inaturalist.org/observations/90419664

Photos / Sounds

What

Harpacticoid Copepods (Order Harpacticoida)

Observer

fiestykakapo

Date

August 13, 2023 12:22 PM NZST

Photos / Sounds

What

White-crusted Aeolid (Trinchesia albocrusta)

Observer

thetidepooler

Date

May 7, 2023 06:01 AM PDT

Place

Bird Rock (Google, OSM)

Description

cerata cores are dark green, found one with light green cerata cores here:
https://www.inaturalist.org/observations/160203257

Tags

Photos / Sounds

Observer

damontighe

Date

December 13, 2022 08:00 PM PST

Photos / Sounds

Observer

skatingflamingo

Date

June 17, 2022 06:28 AM PDT

Description

so curious
-1.8 ft low tide

Photos / Sounds

Observer

imlichentoday

Date

January 30, 2022 03:00 PM PST

Description

low tide

Photos / Sounds

What

Barleysnails (Genus Barleeia)

Observer

kestrel

Date

November 23, 2022 04:15 PM PST

Photos / Sounds

Observer

imlichentoday

Date

August 15, 2022 04:30 PM PDT

Description

Hopping around on brown algae

Photos / Sounds

What

Nudibranch-mimicking Amphipod (Podocerus cristatus)

Observer

imlichentoday

Date

August 15, 2022 04:30 PM PDT

Description

From hydroid clump

Photos / Sounds

Observer

imlichentoday

Date

May 5, 2022 12:30 PM PDT

Description

Freshwater aquatic insects in running creek

Photos / Sounds

Observer

imlichentoday

Date

May 5, 2022 12:30 PM PDT

Description

Freshwater aquatic insects in running creek. This insect was living in a tube with 5 prongs, connected by a web of mucus/silk which it used to catch particles in the water. I watch it actively eat the webbing and create new webbing. There were about 5 active ones on a rock, they were about 1cm tall.

Photos / Sounds

Observer

imlichentoday

Date

April 19, 2022 10:30 AM PDT

Description

Inside Halichondria sp. Looks like L. alata but extended process on article 5 on Gnathopod 2 is longer than average and dactyl has interior bump with setae. Gnathopod 1 dactyl minute with long setae, article 2 curves steeply. Coxae deeper than wider with numerous bumps. Stridulation ventral coxal plates. Rostrum more prominent with longer antenna. Antennae 1 with 16 segments and minute accessory flagellum. Eyes with >20 ommatidia

Photos / Sounds

Observer

imlichentoday

Date

April 24, 2022 12:00 PM PDT

Description

Female. Prominent accessory flagellum. Gnathopod 2 larger than G1, subchelate. Pleonite 3 posterior margin acute and overlay urosomite 1 and 2. Urosomite 1 having medial distal tooth and Urosomite 2 having 3 medial distal teeth with the one in the middle extending into the air. Telson laminar and deeply cleft with lateral and dorsal spines.

Photos / Sounds

Observer

imlichentoday

Date

April 26, 2022 10:30 AM PDT

Description

Inside of Halichondria sp. Two had a polka dot polka-dot pattern and some had a prominent ridge of the anterior side of the propodus, including the brooding female. Distinctly L. alata with antenna 1 with 9-13 segments and accessory flagellum.

Photos / Sounds

Observer

caleidoskopable

Date

April 23, 2022 08:49 PM +08

Photos / Sounds

Observer

amylynn829

Date

October 6, 2020 07:04 PM PDT

Description

Verified by Greg Jensen via Herb Gruenhagen

Photos / Sounds

What

Chan's Dorid (Hallaxa chani)

Observer

bbesom

Date

April 20, 2022

Photos / Sounds

What

Tanaids (Order Tanaidacea)

Observer

imlichentoday

Date

April 20, 2022 07:00 AM PDT

Description

Low tide. Molt of tanaid?

Photos / Sounds

Observer

imlichentoday

Date

March 9, 2022

Description

Found in yellow Haplosclerid sponge on dock. Telson laminar and uncleft, uropod 3 with two Rami narrow and spiny. Gnathopod 2 larger than 1 with 1 being distinctly carpochelate and G2 being subchelate. G2 dactyl reach distal process of article 5. G1 dactyl shorter than article 3 Male has maxillapede instead of keel.

Species described as an invasive introduced to San Francisco bay.

Photos / Sounds

Observer

leslieh

Date

April 28, 2019 09:09 AM PDT

Description

Commensal on purple sea urchin Strongylocentrotus purpuratus

Photos / Sounds

What

Amphipods, Isopods, and Allies (Superorder Peracarida)

Observer

imlichentoday

Date

August 21, 2021 03:30 AM PDT

Description

Low tide rocky intertidal -.9 Living in a tube

Photos / Sounds

Observer

a_meyer

Date

November 25, 2015 04:45 PM PST

Description

Tiny, 3-4mm.

Photos / Sounds

Observer

passiflora4

Date

May 29, 2021 06:34 AM PDT

Description

3 seen.

Photos / Sounds

What

Calanoid Copepods (Order Calanoida)

Observer

alice_abela

Date

January 2022

Description

Santa Barbara County, California.

Photos / Sounds

What

Lance's Doto (Doto lancei)

Observer

anudibranchmom

Date

March 2022

Description

Feeding

Photos / Sounds

What

Phoenix Aeolid (Cuthona phoenix)

Observer

anudibranchmom

Date

March 2022

Photos / Sounds

What

Spotted Lagoon Aeolid (Tenellia adspersa)

Observer

anudibranchmom

Description

Only about 2-3 mm. Cerrata were green with cream tips, and the head was yellowish between the rhinophores. Mcduck pointed out that no oral tentacles were visible (pointing ID to T. adspersa). Body was blotchy cream and brown. Longish, mostly-clear tail contracted as it moved; see video: https://flic.kr/p/XfaDk2

Note that the truly miniscule photobomb nudibranch (maybe a juvenile) is paler and has a T. adspersa-like semicircular oral veil.

Location: T. adspersa is an esturine/brackish species. The comment on http://www.habitas.org.uk/marinelife/species.asp?item=W14820 regarding low salinity environments certainly fits this observation -- we had record low salinity after spring storms this year.

Feeding: Originally on hydroids in harbor. I'm no hydroid expert, but I'd say they were Obelia of some sort, and Ectopleura were present as well. From reading up a bit, Tenellia adspersa feed on both Obelia dichotoma and Ectopleura crocea. Here's the observation for the Obelia: http://www.inaturalist.org/observations/7813379 And the Ectopleura: http://www.inaturalist.org/observations/7813378

Or the very rare Cuthona virens?

Photos / Sounds

What

Spotted Lagoon Aeolid (Tenellia adspersa)

Observer

anudibranchmom

Date

March 2022

Description

@jeffgoddard this is the same individual I sent you a photo of earlier.

Photos / Sounds

What

California Frog Shell (Crossata californica)

Observer

skatingflamingo

Date

March 27, 2022 01:31 PM PDT

Description

so excited!!!!!!!!!
-0.8 ft low tide

Photos / Sounds

What

Cedros Chromodorid (Felimare amalguae)

Observer

theshiplady

Date

September 19, 2020

Description

It looks like a Macfarlands, but much lighter without the middle strip. The rhinophores and gills are much darker.

Photos / Sounds

Date

February 26, 2017 11:01 AM PST

Photos / Sounds

What

Gastropods (Class Gastropoda)

Observer

imlichentoday

Date

February 14, 2022 02:00 PM PST

Description

Low tide

Photos / Sounds

What

Shiny Red Sea Squirt (Cnemidocarpa finmarkiensis)

Observer

imlichentoday

Date

February 18, 2022 11:00 AM PST

Description

Dock foul

Photos / Sounds

Observer

imlichentoday

Date

February 18, 2022 11:00 AM PST

Description

Dock foul, will ID through dissection

Photos / Sounds

Observer

imlichentoday

Date

February 14, 2022 02:00 PM PST

Description

Low tide

Photos / Sounds

What

Arctic Paperbubble (Diaphana minuta)

Observer

jeffgoddard

Date

June 25, 2021 06:44 AM PDT

Description

Shell about 3.5 mm long; found crawling on algae in a low intertidal pool at McKenney Point, Cape Elizabeth.

See:
Ohnheiser & Malaquias (2014. The family Diaphanidae (Gastropoda: Heterobranchia: Cephalaspidea)
in Europe, with a redescription of the enigmatic species Colobocephalus
costellatus M. Sars, 1870. Zootaxa 3774 (6): 501–522.) Available from: https://www.researchgate.net/publication/260684868

https://opistobranquis.info/en/guia/cephalaspidea/cylichnoidea/diaphana-minuta/

Photos / Sounds

Observer

imlichentoday

Date

July 16, 2021 07:00 AM PDT

Description

La Jolla Canyon ~85ft. Coming out of its tube

Photos / Sounds

Observer

imlichentoday

Date

January 28, 2022 02:00 PM PST

Description

Low tide

Photos / Sounds

Date

April 12, 2019

Place

Des Moines (Google, OSM)

Photos / Sounds

Observer

chilipossum

Date

June 21, 2021 02:24 PM PDT

Description

On Eschrichtius robustus

Photos / Sounds

What

Enteromorpha-eating Sapsucker (Aplysiopsis enteromorphae)

Observer

chilipossum

Date

January 2022

Photos / Sounds

What

British Columbia Doto (Doto columbiana)

Observer

passiflora4

Date

February 1, 2022 06:14 PM PST

Photos / Sounds

What

Chocolate Aeolid (Cuthonella cocoachroma)

Observer

passiflora4

Date

January 31, 2022 05:35 PM PST

Description

11 seen, all on Thuiaria hydroid prey. This observation contains pictures of multiple individuals.

Photos / Sounds

What

Amphipods (Order Amphipoda)

Observer

imlichentoday

Date

January 30, 2022 03:00 PM PST

Description

low tide

Photos / Sounds

Observer

lutea11

Date

May 3, 2021 08:50 AM PDT

Photos / Sounds

Observer

leslieh

Date

October 28, 2010 08:42 PM PDT

Description

ID'ed during survey by peracarid specialist. Collected with permits during PICES-Rapid Assessment Survey 2010

Photos / Sounds

Observer

leslieh

Date

October 19, 2010 12:00 PM PDT

Description

ID'ed during survey by peracarid specialist. Collected with permits during PICES-Rapid Assessment Survey 2010

Photos / Sounds

What

Amphipods (Order Amphipoda)

Observer

imlichentoday

Date

January 30, 2022 03:00 PM PST

Description

low tide

Photos / Sounds

Observer

imlichentoday

Date

January 29, 2022 02:30 PM PST

Description

low tide

Photos / Sounds

What

Variegate Amphissa (Amphissa versicolor)

Observer

alanarama3

Date

January 18, 2022 05:20 PM PST
Other Animals

Photos / Sounds

What

Animals (Kingdom Animalia)

Observer

underwaterpat

Date

May 28, 2021 10:37 AM PDT

Description

This is for the hitchhiker on the Limacia cockerelli. Flatworm or Arctonoe scale worm?!

Photos / Sounds

Observer

skatingflamingo

Date

January 22, 2022 07:27 PM PST

Description

@juliabohemian’s find

Photos / Sounds

What

Fringed Filament Worm (Dodecaceria pacifica)

Observer

imlichentoday

Date

January 25, 2022 09:00 AM PST

Photos / Sounds

Observer

imlichentoday

Date

January 25, 2022 09:00 AM PST

Description

2 individuals were collected. First thoracomere fused with head, 5th peronite (free, 6th thoracomere) compressed, peropods have 3 claw dactyl, pleotelson not pear shaped with medial small serrations, uropods half length of pleotelson, urosome flattish, narrow anteriorly, first pereopod propodus (article 6) smooth.

Photos / Sounds

What

Nudibranch-mimicking Amphipod (Podocerus cristatus)

Observer

jeffgoddard

Date

July 15, 1984

Description

Nudibranch Coryphella trilineata (northern form, about 10mm long) & look-alike amphipod Podocerus cristatus. Scanned from a 35 mm slide I took in the lab in 1984. I had found the specimens in close proximity to each other a few days earlier in the low intertidal at Middle Cove, Cape Arago, Oregon. The amphipod (and her recently hatched juveniles, visible at lower right when viewed large) are on a piece of the outer tube of the polychaete Pista elongata; the slug is on a piece of the hydroid Abietinaria.

Notice the white head tentacles of the slug and the white antennae on the amphipod. Here's what one form of the amphipod looks like in central California, where the southern form of O. trilineata ( with chromium orange on their rhinophores and cephalic tentacles) is prevalent: https://www.inaturalist.org/observations/1103734

Farther south, near Puerto Vallarta, MX, the amphipod lacks white lines, just like the abundant local aeolids (see Fig. 1f-h in paper here: https://www.researchgate.net/publication/282252603).

Photos / Sounds

What

Nudibranch-mimicking Amphipod (Podocerus cristatus)

Observer

mcduck

Date

December 1, 2009

Description

6mm length. Found in rocky intertidal.

Photos / Sounds

Observer

alex_bairstow

Date

December 21, 2018 12:52 PM PST

Photos / Sounds

What

Sponge Isopod (Paracerceis sculpta)

Observer

imlichentoday

Date

August 7, 2021 05:00 AM PDT

Description

Low tide -.52ft, rocky intertidal

Photos / Sounds

What

California Caecum (Caecum californicum)

Observer

alex_bairstow

Date

December 3, 2017 03:19 PM PST

Description

Abundant under rocks at low tide.

Photos / Sounds

Observer

imlichentoday

Date

January 16, 2022 03:30 PM PST

Description

low tide

Photos / Sounds

Observer

imlichentoday

Date

January 16, 2022 03:30 PM PST

Description

low tide. The stalked epizoics on the hydroid

Photos / Sounds

Observer

imlichentoday

Date

December 31, 2021 03:00 PM PST

Description

low tide -1.2ft

Photos / Sounds

Observer

imlichentoday

Date

January 16, 2022 03:30 PM PST

Description

low tide

Photos / Sounds

Observer

imlichentoday

Date

January 16, 2022 03:30 PM PST

Description

low tide

Photos / Sounds

What

Gilded Tegula (Tegula aureotincta)

Observer

imlichentoday

Date

January 14, 2022 03:00 PM PST

Description

low tide

Photos / Sounds

What

Herald-Snail (Carychium minimum)

Observer

alex_bairstow

Date

October 1, 2018 09:05 PM PDT

Photos / Sounds

What

Channeled Whelk (Busycotypus canaliculatus)

Observer

theresa12

Date

April 14, 2014 08:12 PM EDT

Photos / Sounds

Observer

dennisthediver

Date

May 23, 2021 01:14 PM -01

Photos / Sounds

Observer

arheyman01

Date

December 26, 2021 03:03 PM PST

Photos / Sounds

What

Dall's Dwarf Turban (Gigahomalopoma luridum)

Observer

hakaiinstitute

Date

July 24, 2017

Description

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-0362 | 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

Photos / Sounds

Observer

imlichentoday

Date

August 7, 2020 08:00 AM PDT

Description

La Jolla Shores / Crap Patch and shallow walls. 60ft. Cute little white shelled snail, about 2 cm long. Photos by Amy Balwin-Granger

Photos / Sounds

Observer

jeffhamann

Date

October 15, 1983

Description

24 mm long. Found intertidally.

Photos / Sounds

What

Pink Tritonid (Tritonia exsulans)

Observer

imlichentoday

Date

January 8, 2022 09:00 AM PST

Description

north of vallecitos point, ~30ft

Photos / Sounds

Date

October 23, 2017

Description

Provisional name = Flabelligeridae HK01 | Photo license and credit belongs to Florida Museum of Natural History & University of Hong Kong | This observation is a part of the collaborative work between FLMNH, University of Hong Kong's Swire Institute of Marine Science, the Smithsonian Institution's Marine Global Earth Observatory (MarineGEO) and Tennenbaum Marine Observatories Network, and the Smithsonian's National Museum of Natural History.

Photos / Sounds

Observer

leslieh

Date

November 14, 2021

Description

inverts from RV Yellowfin cruise_Kimo Morris. Epitoke

Photos / Sounds

Observer

imlichentoday

Date

January 2, 2022 11:30 AM PST

Description

La Jolla Canyon 30ft depth

Photos / Sounds

What

Dark Unicorn (Mexacanthina lugubris)

Observer

cjackson

Date

September 22, 2020 06:15 PM PDT

Photos / Sounds

Observer

giantcicada

Date

November 29, 2021 01:49 PM PST

Description

on oregon-grape leaves in moist mixedwood forest, about 2 mm

Photos / Sounds

What

Copepods (Subclass Copepoda)

Observer

imlichentoday

Date

December 2021

Description

In freshwater vernal pool

Photos / Sounds

What

San Diego Fairy Shrimp (Branchinecta sandiegonensis)

Observer

imlichentoday

Date

December 2021

Description

In freshwater vernal pool. Lots of females with eggs. The green iridescence on the thorax is so pretty!

Photos / Sounds

What

Yellow Umbrella Slug (Tylodina fungina)

Observer

imlichentoday

Date

November 5, 2021 05:00 PM PDT

Description

Low tide -1.05, found tide pooling

Photos / Sounds

What

Turbonilles (Genus Turbonilla)

Observer

imlichentoday

Date

December 19, 2021 03:30 PM PST

Description

Low Tide

Photos / Sounds

What

Olive's Sapsucker (Hermaea oliviae)

Observer

imlichentoday

Date

September 6, 2021 04:00 AM PDT

Description

low tide

Photos / Sounds

What

Olive's Sapsucker (Hermaea oliviae)

Observer

jeffgoddard

Date

May 7, 2016

Description

About 4 mm long, found in a tide pool at Hazard Canyon.

Photos / Sounds

What

Pacific Half-slipper Snail (Crepipatella lingulata)

Observer

imlichentoday

Date

December 18, 2021 03:30 PM PST

Description

Low tide

Photos / Sounds

What

Slender Sea Pen (Stylatula elongata)

Observer

imlichentoday

Date

October 16, 2020 08:00 AM PDT

Description

La Jolla Canyon Vallecitos Point ~55ft

Photos / Sounds

Observer

dennisthediver

Date

December 6, 2021 04:35 PM -01

Photos / Sounds

What

Green Bubble Snail (Haminoea virescens)

Observer

imlichentoday

Date

December 2, 2021 02:30 PM PST

Description

Tide Pools at low tide

Photos / Sounds

Observer

imlichentoday

Date

December 7, 2021 07:00 PM PST

Description

Low tide. Shot from above and below water.

Photos / Sounds

What

Striped Nudibranch (Armina californica)

Observer

helgeweissig

Date

October 2, 2021 08:11 AM PDT

Photos / Sounds

What

Striped Barrel Snail (Rictaxis punctocaelatus)

Observer

hakaiinstitute

Date

August 5, 2017

Description

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-2979 | 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

Photos / Sounds

Observer

arheyman01

Date

February 10, 2021 11:29 AM PST

Photos / Sounds

What

Volcano Keyhole Limpet (Fissurella volcano)

Observer

arheyman01

Date

May 17, 2021 11:42 AM PDT

Description

Actually kind of a cute face hehe

Photos / Sounds

Observer

imlichentoday

Date

December 7, 2021 07:00 PM PST

Description

Low tide

Photos / Sounds

What

One-banded Lacuna (Lacuna unifasciata)

Observer

imlichentoday

Date

December 3, 2021 03:00 PM PST

Description

tide pooling at low tide. carrying the burden of of red algae

Photos / Sounds

What

Hilton's Aeolid (Phidiana hiltoni)

Observer

imlichentoday

Date

December 3, 2021 03:00 PM PST

Description

tide pooling at low tide. Notice the difference in right left symmetry: one side has larger cerata with pink tips, large rhinophore, and longer oral tentacle.

Photos / Sounds

What

Pear Marginella (Granulina margaritula)

Observer

imlichentoday

Date

December 4, 2021 05:30 PM PST

Description

Low tide, lower intertidal ~7mm long

Photos / Sounds

Observer

imlichentoday

Date

December 5, 2021 10:30 AM PST

Description

Found on debris in water while kayaking

Photos / Sounds

What

Genus Doto

Observer

squishlefish

Date

November 22, 2021 08:14 PM PST