Dashing

  

Juvenile Hairy Rock Crab (Romaleon jordani, formerly Cancer jordani) with a fun color pattern.  Thanks to Eric for spotting it!

Sand sculpture

 

A rock crab (Romaleon antennarium, formerly Cancer antennarius) buried beneath the sand.  I like the way you can see that it's a crab just by the impressions left at the surface.  It looked a bit like a sand sculpture!