name these critters.

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koozemani

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picture were taken off of San Carlos, Sonora in the Sea of Cortez(Gulf of California). Depth was about 30 feet and temperature was 62-64 F for all three critters.

DSCN2931.jpgDSCN2834.jpgDSCN3109.jpg
 
[-]The first two are nudibranchs. The yellow one is most likely a lemon.

The second one could be an arminid (sp) but I doubt it. I don't think they're ever black. Google striped nudibranch for some similar.[/-]

Oops...

A complete guess on the 3rd is some sort of spotted cowrie.
 
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The first one(yellow) is some kind of snail. I saw a few examples on the same dive and there is definitely a shell.

the second one is not listed on nudipixel as being one of the nudi species in the sea of Cortez. I expanded my search further out and still could not I'd it. I also tried searching for it as a flatworm with no luck either.

I agree that the third one is some type of cowry, just hoping for a specific name. New to me.
 
Thanks mbt!!!!
 
Once again, Phil beats me to it. That's twice this morning. I must be slowing down in old age!
 

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