Showing posts with label brittle star. Show all posts
Showing posts with label brittle star. Show all posts

Sunday, May 25, 2014

Brittle stars and orange eggs

We found this giant kelp holdfast washed up on the beach today.



Look closely, can you see anything?



There are brittle star tentacles. There were literally hundreds of brittle stars within this one clump of kelp. And I noticed an orange substance on my hands after I touched it. I'm pretty certain they were eggs. You can see them, orange in color, on the stems (stipes?) in the picture here. I'm not able to find anything conclusive about the looks of their eggs on Google for the time being. Do you know?  

Sunday, September 8, 2013

Marine Invertebrates in Kelp Holdfasts

Holdfast of Giant Kelp (Macrocystis Pyrifera)
Growth pattern of Giant Kelp (Macrocystis Pyrifera)
Brooding Sea Anemone (Epiactis Prolifera) it's spitting something out

Unidentified Crab Megalops Larvae

California Sea Hare (Aplysia Californica)


Striped Sea Hare (Navanax inermis)
Sandcastle Worm? (phragmatopoma californica)
Unidentified - egg sac?
Peanut Worm? (Sipuncula)
Eighteen Scaled Worm? (Halosydna brevisetosa) you can also see the 'foot' of the mussel sticking out
Purple Star (Pisaster Ochraceus)
Ghost Shrimp?
Larval Octopus (look close you can see it's suckers)
Purple Sea Star and Unidentified Brittle Star

western spiny brittle star (ophiothrix spiculata) - September 5, 2013
"ophio" meaning snake or serpent, "thrix" meaning hair, and "spicula" meaning needle. These stars can be found entangled in the washed up holdfasts of the majestic Giant Kelp (macrocystis pyrifera). We have observed it "milk" a whitish substance once and this time one of the stars released an orange colored cloudy substance; eggs?

Here are its spines under the microscope... amazing.