Sitting on the doorstep

 

A tiny Red Octopus (Octopus rubescens) sitting at the entrance of an empty Brown Turban Snail (Tegula brunnea) shell.  It's hard to judge the size, but for perspective, the largest Brown Turban Snails are ~30 mm wide (~1 inch), which is a little larger than a quarter.  When curled up, this octopus was only about half that size!