Showing posts with label mussel. Show all posts
Showing posts with label mussel. Show all posts

Friday, April 11, 2014

Kelp fly hoards, molluscs and bryozoa at Strands


The weather has been in the 80s so instead of the mountains we went to the beach. It was actually much cooler today with a marine layer cover that stuck around all day. Impossible to avoid were hoards of kelp flies. As you can see in the pictures below, they were all over everything and made it pretty uncomfortable for a while until we just got used to them.



We found this beautiful smooth brown turban snail. You can see it's lime green colored umbilicus and operculum showing here.



Here's a video from Dec 2013 of this same snail. You can see it's beautiful orange and black flesh. 



Here is a mussel extending its foot. It's interesting to see how it reacts to the periwinkle. 


Lucky for us, Cindy brought this $20 field microscope with her. We were able to observe bryozoa on the kelp that we would not have been able to see with the naked eye. While it isn't anything like a good home microscope, and it view area is small, it is still a good option for use in the field. 


Here's a video of the bryozoa under our home microscope. It's unbelievable that we swim into and walk all over these creatures at the beach without a thought for their magnificence.


And here is a beautiful image of bryozoa by German biologist Ernst Haeckel from Kunstformen der Natur depicting symmetry and order. 


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.