Photos / Sounds

What

Sunflower Sea Star (Pycnopodia helianthoides)

Observer

anna-gardner

Date

January 11, 2024 04:10 PM PST

Photos / Sounds

What

Sunflower Sea Star (Pycnopodia helianthoides)

Observer

maddiemcnerthney

Date

July 7, 2023 10:23 AM PDT

Photos / Sounds

Observer

rebeccafay

Date

June 21, 2023 09:09 AM PDT

Description

?

Photos / Sounds

What

Dainty Sulphur (Nathalis iole)

Observer

nature4lzw

Date

March 21, 2022 02:58 PM PDT

Description

Plum Canyon. Well-camouflaged next to desert lavender leaves.

Photos / Sounds

Observer

skatingflamingo

Date

June 14, 2021 06:36 AM PDT

Photos / Sounds

What

Norris' Chromodorid (Felimida norrisi)

Observer

kestrel

Date

May 17, 2021 05:18 PM PDT

Photos / Sounds

What

Southern Sea Otter (Enhydra lutris ssp. nereis)

Observer

chilipossum

Date

July 2018

Photos / Sounds

Observer

craigahoover

Date

January 22, 2011 05:18 PM PST

Photos / Sounds

What

Coyote (Canis latrans)

Observer

sfkestrel

Date

September 8, 2020 08:17 AM PDT

Description

Coyote with Jackrabbit

Photos / Sounds

What

White Italian Snail (Theba pisana)

Observer

olivia_v

Date

September 5, 2020 11:00 AM PDT

Photos / Sounds

What

California Spiny Lobster (Panulirus interruptus)

Observer

juliebwalters

Date

August 12, 2020 09:19 AM PDT

Photos / Sounds

What

Tule Elk (Cervus canadensis ssp. nannodes)

Observer

robberfly

Date

January 2019

Description

Amazing bonus to watch them joisting. Great day with @kestrel and @rebeccafay

Photos / Sounds

Observer

stewartclarke

Date

March 18, 2020 07:30 AM +04

Photos / Sounds

What

Sierra Juniper (Juniperus grandis)

Observer

stinger

Date

August 7, 2019 10:41 AM EDT

Photos / Sounds

What

Yellow Shore Crab (Hemigrapsus oregonensis)

Observer

meowhayley

Date

April 29, 2019 01:21 PM PDT

Photos / Sounds

What

Sonoma Shoulderband Snail (Helminthoglypta sonoma)

Observer

apatten

Date

April 2019

Description

A turkey was killed by a predator and these shoulder bands were in its stomach

Photos / Sounds

Observer

allisonjgong

Date

June 16, 2018 07:20 AM PDT

Photos / Sounds

What

Nicklin's Shoulderband Snail (Helminthoglypta nickliniana)

Observer

kschnei

Date

April 29, 2018 08:44 PM PDT

Description

About 2-3 cm in diameter, found near downed log.

Photos / Sounds

What

California Banana Slug (Ariolimax californicus)

Observer

tomv

Date

April 28, 2018 11:42 AM PDT

Photos / Sounds

What

Black Westernslug (Hesperarion niger)

Observer

kschnei

Date

April 2018

Description

Found on trail at night, about 2-3 cm in length.

Photos / Sounds

Observer

dlbowls

Date

June 26, 2017 08:32 AM PDT

Photos / Sounds

What

Spotted Calloused Beach Pillbug (Tylos punctatus)

Date

July 1, 2017 09:00 AM PDT

Photos / Sounds

What

Shield False Limpet (Williamia peltoides)

Observer

cedric_lee

Date

April 27, 2013

Photos / Sounds

What

Coastal Green Hairstreak (Callophrys viridis)

Observer

robberfly

Date

March 28, 2017 11:03 AM PDT

Description

1st Day - 2017 Mission Blue Survey/GGNRA. Shot #3 - my office for 9 weeks! Note the teal blue on a fresh Coastal.

Photos / Sounds

What

Padre's Shooting Star (Primula clevelandii)

Observer

zabbey

Date

February 4, 2017 04:40 PM PST

Photos / Sounds

What

Water Clover (Marsilea vestita)

Observer

merav

Date

December 25, 2016 02:22 PM PST

Description

Amphibian eggs?

Photos / Sounds

What

East Pacific Red Octopus (Octopus rubescens)

Date

November 13, 2016 04:23 PM PST

Description

Part of the same hatch as the previous observation.

Photos / Sounds

What

Monarch (Danaus plexippus)

Observer

robberfly

Date

November 22, 2016 01:40 PM PST

Description

Xerces Society Monarch Surveying Day - Island has had massive development since last year. Major, mature eucalyptus trees cut down. Had 45+ Monarchs sunning mid-canopy on Coast Guard property to the East on the island. Makes me crazy how much...tremulous fragility...is projected onto these creatures. Quite, quite scrappy butterflies.

Photos / Sounds

What

Hexagon Tuskshell (Dentalium neohexagonum)

Observer

susanhewitt

Date

October 2, 2016 05:00 AM PDT

Photos / Sounds

What

Arboreal Salamander (Aneides lugubris)

Observer

serpophaga

Date

September 27, 2016 09:34 PM PDT

Description

Two of five individuals encountered on north side of island in "The Notch" on path to North Landing. A known hotspot for the species on the island.

Photos / Sounds

What

American Black Bear (Ursus americanus)

Observer

erricofamily

Date

April 19, 2016 05:48 AM PDT

Description

Came sniffing around our empty trash cans around 4:30 a.m., climbed over fence and spent a good 45 minutes in our yard before leaving a little present then hopping back fence and disappearing into Eaton Canyon

Photos / Sounds

What

California Dutchman's Pipe (Aristolochia californica)

Observer

dirque

Date

February 16, 2016 12:49 PM PST

Photos / Sounds

What

Giant Rock Scallop (Crassadoma gigantea)

Observer

kestrel

Date

July 6, 2016 08:47 AM PDT

Description

I think this is a rock scallop? At first I thought it was an imprint of a shell in hardened anoxic mud, but it's concave and looks like there's a hinge on the other side. Any thoughts on why it's so dark?

Photos / Sounds

What

Feather Boa Kelp (Egregia menziesii)

Observer

smartrf

Date

June 6, 2016 08:27 AM PDT

Photos / Sounds

What

Arks, Bittersweet Clams and Allies (Superfamily Arcoidea)

Observer

gyrrlfalcon

Date

April 1, 2016 09:23 AM EDT

Description

I land marshy river way

Photos / Sounds

What

Allen's Hummingbird (Selasphorus sasin)

Observer

leslie_flint

Date

April 16, 2016

Photos / Sounds

What

Elongated Violet Snail (Janthina umbilicata)

Observer

gbentall

Date

April 7, 2016 06:36 PM PDT

Description

@invertzoo, can you believe I came across these today after our recent conversation?? They were adherent on Anthopleura elegantissima Do you think they are also J. umbilicata?

Photos / Sounds

What

Threaded Nudibranch (Pseudobornella orientalis)

Observer

anudibranchmom

Date

March 29, 2016

Description

New one to me! This crazy nudibranch was not teeny -- about 1" long. Cream body with brown speckling and cool yellow lines. Large foot. Rows of gills like Dendronotus? Oral tentacles flicked up and down like a cockatoo's crest. BUT THE WEIRDEST THING were these crazy long flowing 'streamers' coming from the top of each rhinophore sheath - kind of looked like worms, though clearly attached and marked like the rest of the body (cream with brown specks). Found on Tubularia. Invasive? Video: https://www.flickr.com/photos/30314434@N06/25521619833/in/dateposted/

Calling out the big guns for help: @tgosliner @mcduck @rebeccafay @sluglust @kestrel @kueda

UPDATE 5/16/2016: Here's the very nice video that the California Academy of Sciences created about this guy: https://www.facebook.com/calacademy/videos/10154157032862311/

Photos / Sounds

What

Ohlone Tiger Beetle (Cicindela ohlone)

Observer

leptonia

Date

February 2016

Photos / Sounds

What

Mission Blue (Icaricia icarioides ssp. missionensis)

Observer

robberfly

Date

March 2016

Description

First Adults ( three males ) observed this season up here...

Photos / Sounds

What

Pacific Purple Sea Urchin (Strongylocentrotus purpuratus)

Observer

kestrel

Date

February 8, 2016 05:11 PM PST

Description

Most ones that I see that are this small are still green - interesting to find a tiny one that is already purple!

Photos / Sounds

What

Xantus Swimming Crab (Achelous xantusii)

Observer

dzierten

Date

March 15, 2016 01:41 PM PDT

Photos / Sounds

What

Banana Slugs (Genus Ariolimax)

Observer

marionanoiram

Date

February 25, 2016 11:45 AM PST

Photos / Sounds

What

Armored Sea-Fog Lichen (Niebla homalea)

Observer

robberfly

Date

February 18, 2016 12:24 PM PST

Description

Best Part of Walk: this Niebla caught my eye up the hill. An old W.P.A. trail up over the summit, inaccessible for years due to poison-oak has Been Cleared! I walked in an area I'd always dreamed of exploring. Lichen-a-go-go! Not a lot of this county I've not been in...

Photos / Sounds

What

Anna's Hummingbird (Calypte anna)

Observer

robberfly

Date

November 29, 2015 03:03 PM PST

Description

With a friggin' cell phone on my front friggin' porch. Bam!

Photos / Sounds

What

American Bittern (Botaurus lentiginosus)

Observer

robberfly

Date

January 11, 2016 09:01 AM PST

Description

Gave myself one hour to look for this. Right out in the open as I walked up: really are crepuscular.

Photos / Sounds

What

Ochre Sea Star (Pisaster ochraceus)

Observer

jmaughn

Date

November 24, 2015

Description

Having a bad day...

Photos / Sounds

What

Spotted Dorid (Triopha maculata)

Observer

anudibranchmom

Date

December 2015

Photos / Sounds

What

Monarch (Danaus plexippus)

Observer

robberfly

Date

November 19, 2015 12:38 PM PST

Description

I returned from the Texas this week straight into my annual commitment to survey the Western Migration/Overwintering Sites of the Monarch ( Danaus plexxipus ) in San Francisco County.
With Mr. Adolph Sutro's "gift " of Blue Gum Eucalyptus to our city more than 100 years ago, this is a great deal more difficult than it sounds - complete "needle in haystack " work for three weeks and, to be honest, not really...fun. I've done this now for 8 years and we have so few Monarchs that a real Natural Bridges-them-flying-everywhere-in-the-canopy is something I never see. Dr. John Hafernik reported 700 in Golden Gate Park in 1997. I've never seen anything coming close to that at any historic site I visit...
Until today...
Reports had come in from the staff at the Presidio Trust of "dozens and dozens" in certain areas. Took two buses and climbed up the known north-facing wall of Rob Hill, a historic roost that had been radically altered due to restoration for the endangered San Francisco Lessinga ( Lessingia germanium ). The Presidio Trust has been working with Dr. Stuart Weiss to protect the known habitat for the Monarchs while drastically thinning the north-facing wall of Eucs. I walked to the far eastern portion of the Hill and...there they were. Numbers I've never seen it San Francisco. Most of them sunning themselves. Nothing much to nectar on but...clearly a healthy roost.
Counted approximately 225 - the most I've ever seen in our county in one day.
Not really interested in the never-ending politics of this creature - what are we doing right/what are we doing wrong - just...reveled in it's...phenomenon today.

Photos / Sounds

What

Monarch (Danaus plexippus)

Observer

robberfly

Date

November 19, 2015

Description

Radical restoration of this too known overwintering site. Count 9 here today.

Photos / Sounds

What

Bat Star (Patiria miniata)

Observer

jaykeller

Date

February 21, 2015 07:24 AM PST

Photos / Sounds

What

Bat Star (Patiria miniata)

Observer

danielgeorge

Date

April 19, 2003 09:03 AM PDT

Photos / Sounds

What

Hopkins' Rose Nudibranch (Ceratodoris rosacea)

Observer

anudibranchmom

Date

November 2015

Description

With egg spirals. As the nudibranch moved away from the eggs, a small snail (Amphissa?) moved in. Maybe it ate some, note sure about this.
Does anyone know why there are air bubbles next to the eggs? They were not on the rest of the rock.

Photos / Sounds

What

Sickle-winged Skipper (Eantis tamenund)

Observer

kueda

Date

November 4, 2015 03:00 PM CST

Photos / Sounds

What

Myiozetetes Flycatchers (Genus Myiozetetes)

Observer

natureinla

Date

October 2015

Description

Observation and photo by Maya Lopez and Wendy Lopez, sent to nature@nhm.org.

Photos / Sounds

What

Beautiful Hypseldoris (Hypselodoris pulchella)

Observer

stephanio

Date

August 24, 2015

Photos / Sounds

What

Red Papillae Dorid (Diaphorodoris papillata)

Observer

whodden

Date

October 12, 2012

Photos / Sounds

What

Hopkins' Rose Nudibranch (Ceratodoris rosacea)

Observer

badwound

Date

August 1, 2015 07:51 AM HST

Photos / Sounds

What

Cooper's Yoldia (Yoldia cooperii)

Observer

gbentall

Date

February 5, 2015 12:58 PM PST

Description

Megayoldia species, M. thraciaeformis? I have never seen this clam before! It is from deep water to 2,500 ft. Distinctive teeth on margins. Finding this guy a true moment of joy!

Photos / Sounds

What

Modest Cadlina (Cadlina modesta)

Observer

dpom

Date

June 18, 2015 05:42 AM PDT

Description

ventral view

Photos / Sounds

What

Olive's Aeolid (Anteaeolidiella oliviae)

Observer

mcduck

Date

February 8, 2008

Description

16mm total length.

Photos / Sounds

What

Nudibranchs (Order Nudibranchia)

Observer

robberfly

Date

February 16, 2015 03:36 PM PST

Description

Doesn't get much better than seeing these two side by side: Spanish Shawl and the Opalescent Nudibranch. A spectacular afternoon.