Pacific chorus frog ~ 08/29/13 ~ at home

Pacific chorus frog and tadpole, bladder snails, and duckweed
Pseudacris sierra, Physa spp. (aka Physella spp.), and Lemna sp.

Araceae

Look!  Find the frog.  This is the first one to crawl from my 2013 spring hatch.  I've enjoyed having them again this year.  Instead of obsessing over whether their water was clean enough, I let the water stand all summer to create a more natural environment.  I'm guessing this may help explain why I have frogs this early, compared to the 6-14 months it eventually took last time.

Considering my various aquatic plants have come from different sources, I've also had additional bladder snail stowaways.  I'm starting to think I have a couple different species, some with white lines and others with a more translucent, lacquered tortoiseshell appearance.

Also, I finally looked up duckweed.  Had no idea they're native.  I always thought they were introduced and problematic.  Guess not.

ps - As I was searching for embedded links, I came across a relatively new United States Department of Agriculture (USDA) online offering called ID Tools.  My favorite so far is the Terrestrial Mollusc Tool, especially considering my sister-in-law (aka garden slug hunter extraordinaire) and I searched high and low for approachable slug experts to little avail.  This site is my first online ID resource recommendation listed under gastropods.  Awesome.

floating sea snail ~ 03/29/12 ~ Coast Guard Pier

a floating sea snail

Carinaria japonica (aka Carinaria cristata japonica)

for more information

posted 05/12/12 - It's thanks to Neil's (one who has many online profiles) comment on my previous salps post that I got a lead on the ID of this marine snail. Since it's such a different animal, I've moved it to its own post. And guess what? It eats salps. It was buffet day for this fantastic purple-lipped Carinaria. I had a good time looking for information on this little known animal. Make sure to check out the embedded links above in the ID for informative sites. Very cool. Thanks, Neil!

CA horn snail ~ 10/13/11 ~ Morro Bay

California horn snail
Cerithidea californica

posted 11/03/11 - I wanted to revisit this ID with fresh pictures and conduct another online ID search. What I noticed this visit was that all the snails on the path were dead with their openings facing down in the mud. I thought this was peculiar and probably not random. For the second picture above, I turned one over and cleaned the opening to show the shape of aperture. I reached into the green gunk to take a closer look at an actual live snail. The one I'm holding is about medium sized compared to the larger empty shells.

Walla Walla University still has the best somewhat-local ID comparative description I've found under Batillaria attramentaria (one of two Japanese false cerith snails, with the other being Batillaria zonalis, if indeed it is a distinct species). Plus, this time around I noticed Conchology, Inc. has at least two errors on their Potamididae family page; Batillaria spp. belong to the Batillariidae family page. So, this got me thinking about looking at other similar looking marine snails. WoRMS is great for listing the names of other Cerithioidea families. I looked through the Natural History Museum Rotterdam's site and came up with the following families that have similar looking shells: Batillariidae, Cerithiidae, Dialidae, Potamididae, Scaliolidae, Thiaridae, and Turritellidae. I checked the EOL for the locations of some of the snails, but none are recorded anywhere near central California's coast, except C. californica and B. attramentaria. Nature's variations amaze me.

I don't often post so many pictures for a single ID, but this was a personal quest after my minor hubbub around a permissions request and withdrawal from my first post of CA horn snails. It caused me to go into major blogging existential contemplation, which I wrote about in am I doing the right thing with this blog?

blueband hermit crab ~ 10/02/11 ~ Shoreline Park

blueband hermit crab

Pagurus samuelis

This is the first time I've really looked up hermit crabs. It's a challenge to find local hermit crab information, because most searches show pet hermit crabs from the Caribbean and Ecuador. I've collected better marine internet sources since my first hermit crab post on 06/04/09.

The blue bands on the legs, solid red antennae, location, and behavior make me fairly confident of this ID. We have a variety of hermit crabs here, including grainyhand hermit crab (Pagurus granosimanus), bering hermit crab (Pagurus beringanus), and hairy hermit crab (Pagurus hirsutiusculus).

Thanks to a nifty new interpretive sign, I learned the black shells with sanded tops and edges were made by black turban snails (Chlorosroma funebralis). There are a couple different snail shells being used by hermit crabs in the last picture. My wild guesses are possible Littorna sp. or Nucella sp. Stanford's SeaNet also has a nice representation of other subtidal shelled gastropods. And, I really like Gary McDonald's UC Santa Cruz's Intertidal Invertebrates of the Monterey Bay Area, CA site.

Make sure to click on any of the highlighted words (embedded links) for more information.

Pacific chorus frog ~ 06/30/11 ~ at home

Pacific chorus frog tadpole with bladder snail
Pseudacris sierra with Physa acuta

I've thoroughly enjoyed watching my tadpoles. Almost all of them were released from their egg sacs the day after I first posted pictures on 05/30/11 making them 1 month old. Most of the time they simply rest on the bottom of the aquarium, not too exciting. Around mid-morning and mid-afternoon they get more active. They eat duckweed roots as shown above and algae off the sides and bottom of the aquarium like miniature vacuums. Amazingly, they can float up without moving their tails. How do they regulate their buoyancy? I had to fiddle with the pictures above to show the details; it's really difficult to get clear pictures through glass and murky water. I have over 15 tadpoles and numerous snails which have already mated, laid eggs, and hatched young since I've had them. Does anyone know what kind of snail commonly comes with purchased pond plants? Speaking of which, the oxygenating plant (shown in the second pic) is not milfoil, but I forgot what it is.

ps 07/11/11 - The frilly plant floating in the second pic is rigid hornwort, aka coon's-tail (Ceratophyllum demersum). While this is a native plant in CA and elsewhere, I will be careful about how I dispose of this plant's parts as it can be considered invasive and easily propagates from fragments. As for the snail, I believe it is a bladder snail (Physa acuta, aka Physella acuta). It has a left-sided aperture (all Physa spp. have this), pointed spire (sharper than the other common aquarium tadpole snail), thin shell (I accidentally crushed one while taking a closer look), and small size of 3-12 mm (generally smaller than Physa gyrina). For now I'm going to keep the snails; they may end up being a good food source for when the tadpoles metamorphose.

pss 08/09/11 - For a much better picture of a pacific chorus frog tadpole, check out John Wall's Natural California.

pss 08/13/11 - For nice pictures of pacific chorus frogs out in the wild, check out Cindy at Bug Safari. She's quite a bit south from where I'm at. I don't know if I'll have any adults this year.

CA horn snail ~ 10/31/10 ~ Morro Bay

California horn snail
Cerithidea californica

These shells are kinda of pretty with the blue on the fat end. It's somewhat odd to me that I found these in a town that I visited for many, many years for holidays where we always went to The Shell Shop. They sold the prettiest, polished shells from around the world for pennies. My mother liked keeping an abalone shell filled with various other shells as decoration on our main bathroom counter. Maybe it was a sign of the times. I don't know. I do remember not being particularly keen on cleaning them when they got covered in household dust during my weekly bathroom chores. Now, I feel a little repulsed by any collection of animal parts on display as art or decoration, without any knowledge of what they are. "Pretty" just doesn't do it for me anymore.

With a quick search online, I didn't find a decent site describing C. californica, but I'm fairly sure of this ID. Several sites mention the CA horn snail is similar looking to the introduced Asian horn snail (Batillaria attramentaria), which I've posted about before. However, when considering the location, relative density of the horn snails, and looking at pictures of each without being completely covered in mud, the visual cues seem fairly obvious. Despite my hesitation to promote online commercial interests, I found Conchology, Inc. to have an excellent pictorial comparison of snails in the Potamididae family.

ps 10/01/11 - I was asked this week for permission to use my photos of CA horn snails by a journalist from Pour la Science (apparently the French version of Scientific American). I was pretty chuffed that someone from France found my pictures and wanted to use them in a respectable publication, online and in print. During our e-mail communications, I pointed out that I am not a malacologist and that my IDs are my amateur best guesses. Hey, I really do try to be honest and up front. I'm not sure how that translated into French, but she ended up declining use and thanked me for my time. I remember how long it took me to make this Cerithidea californica ID, and I'm 95% sure I got it correct. Before granting permission, I admit to holding concerns about knowing exactly what the article was supposed to be about and whether to charge $ for use (more for those bloggers who use their blogs as a way to advertise their own professional photography; personally, I don't have much interest in that kind of thing). I did not ask pay for use, but I did ask to quote her e-mail request. She didn't respond specifically, so I don't have it available here. I was a bit disappointed my photos are not being used, and my ego got bruised. In any case, her article is already out: http://www.pourlascience.fr/ewb_pages/a/actualite-escargots-volants-28027.php. I assume she received permission from Conchology, which I embedded in my original post above, but she also got the credits incorrect - I seriously doubt Haderman had access to e-photography back in 1840. I think it'd be a tough job being a journalist and writing about things you know very little about.

pss 11/03/11 - I visited this place again to get better pictures and to double-check my ID. Please see my new post on CA horn snails.

Asian horn snail / Japanese false cerith
Batillaria attramentaria

Eww! What are those things? Listen here, I'm generally not a squeamish person, save for slimy, crawly maggots... unless I'm raising flies to feed mantids, but that's a story for another time. For some reason these mud snails really gross me out. They're similar to our native horn snails (Cerithidea californica), but hail from Japan. Simply based on the massive numbers shown above, I'm guessing these are the invasive species. Click on the common names above for more information on local research.

hermit crab ~ 06/04/09 ~ Shoreline Park

hermit crab

While exploring the tide pools along Oceanview here in town, we played with the hermit crabs. This one popped out of its shell and mooned me. He quickly slipped right back into his shell when I dropped him back into the water. We pried small limpets off the rocks and instigated food fight frenzies amongst the hermit crabs. It was great fun!