Spotted trunkfish

This morning, I encountered half a dozen spotted trunkfish on my dive.  Trunkfish are members of the boxfish family.  They are triangular in cross section, with a triangular boxy skeleton.  They have a broad, flat belly.  They don't swim very fast, and are often seen hiding under reef structures.

These fish were 5 or 6 inches long, and the photos were taken at depths of 35 to 50 feet.