Pacific sand crab ~ 11/25/13 ~ Asilomar Beach

Pacific mole crab / Pacific sand crab

Emerita analoga

They look like delicately patterned cracked egg shells. At first, I didn't think these pics were ideal as an ID entry, but it occurred to me that I tend to see the carapaces of sand crabs more often than actual live crabs, which has been late at night while looking for grunion.  Are they nocturnal?  I'm assuming the numerous carapaces are from a mass molt, rather than a mass die-off of sand crabs, but I don't really know. I'm always amazed how the composition of wrack changes through the seasons. Here's a mixture of sand crab carapaces, various red seaweeds, and surf-grass. It's nature's compost by the sea.

ps - In the first photo, directly behind the right carapace, the out-of-focus green surf-grass is covered in pink-colored crusting red algae called Melobesia mediocrus.

seaweeds ~ 09/01/12 ~ Asilomar Beach

delicate sea lace
Microcladia coulteri

posted 09/10/12 - As I was looking for barnacles the other day in a beachcomber's guide (Thanks, Jennifer!), I found a picture of a red algae that looked very much like this one. Finally, here's an easy ID... or so I thought. I took the name winged fronds, aka winged rib (Delesseria decipiens), from the book to obtain links for my blog post, but what I found online didn't look anything like what was pictured in the book. Bad photo or incorrect ID in the book, I can't say for sure. However, I discovered there are an almost identical form of Microcladia californica and a similar looking species Plocamium pacificum to what I have pictured here. It's difficult to know with certainty, because IDing a small piece of algae washed up on the beach is like trying to ID a plant solely on one dried leaf blown in from who knows where. Both Delesseria decipiens and Plocamium pacificum are saxicolous, meaning they grow on rocks, whereas Microcladia coulteri and M. californica are epiphytic on other algae.

giant kelp and Turkish towel

Macrocystis pyrifera or M. integrifolia and Chondracanthus corymbiferus or C. exasperatus

Geez, I only wanted to show the amazing different textures of these brown and red algal blades. I didn't realize there were different spp. found locally. Without seeing the entire seaweed, it's difficult to know for sure. Note the epiphytic Microcladia on the Turkish towel. As an aside, many brown marine algae are known as kelp. Seaweed is an informal term for marine green, brown, and red algae.

feather boa kelp

Egregia menziesii (now includes E. laevigata)

Finally, a seaweed that I absolutely know the ID. This post took me several mornings to research (click all the blue highlighted links), and I ended up feeling like I was banging my head against an intertidal rock. There's an incredible world of underwater life that very few people appreciate unless it happens to wash ashore in its dying and broken form. I'd love to take up scuba diving or go out on marine watching boats, but alas the hole in my eardrum keeps me from going underwater at any depth and I get terribly seasick. I probably should resign myself into simply saying, "Oooh, pretty seaweed."

red seaweed ~ 10/02/11 ~ Shoreline Park

red seaweed / red algae
Rhodophyta

Last year, during the period of time from the autumnal equinox through October, I captured brown algae (kelp) at Asilomar State Beach and green algae (sea lettuce) at the Monterey Municipal Beach. Without prior intention, I am completing my algae collection with red, even though not all red algae is actually the color red. Just like last year, I again heard the waves starting to crash just before the equinox, which likely break up whatever is growing near the shore. I'm impressed the ocean has seasons just like on land. Like leaves littered on the forests floors, the beaches are littered with seaweed during autumn.

As much as I wanted to place an ID, if only to genus, on this red seaweed, any guess I make would be pure speculation. I even had questions as to how the red seaweed I see on the beach is related to the harmless "red tide" algae. There are macroalgae and microalgae. Lost in the Landscape has an interesting blog post about red tide causing bioluminescent waves. It's all a bit confusing to me, and I've got a lot to learn.

The larger much more impressive giant kelp seems to get all the algae attention around these parts, and information on red algae is difficult to find. The best local sites I've found that picture red algae are:
Stanford's SeaNet Rocky Shore Red Seaweeds
Stanford's SeaNet Subtidal Red Seaweeds
MBARI's Monterey Bay Flora Rhodophyta
CSU Sonoma's Marine Algae of Northern California