Tritons have solid shells with prominent spiral sculpture interrupted by varices, vertical ridges that are remnants of the shell's aperture from earlier stages of growth.  There is a short siphonal canal at the anterior end or base of the shell.  Most live shells are covered by a periostracum composed of brown bristles giving them a hairy appearance.   Tritons use corrosive saliva to subdue and liquefy prey including mollusks and echinoderms.  Family Cymatiidae was reorganized under the Ranellidae as a subfamily in 2005. 

TRITON'S TRUMPET

NICOBAR'S TRITON

CLEAR TRITON

PURPLE-MOUTHED TRITON

COSMOPOLITAN HAIRY TRITON

INTERMEDIATE HAIRY TRITON

COMMON HAIRY TRITON

BLACK-STRIPED or LIVER TRITON

RUBY TRITON

BEU'S TRITON

CLANDESTINE TRITON

Gyrineum lacunatum

PURPLE GYRE TRITON

Distorsio anus 

COMMON DISTORSIO

or ANAL TRITON

CHECKERBOARD DISTORSIO

or BURGESS' TRITON

Frog shells are named for the rough texture resembling a toad.  They are similar to tritons with the addition of a posterior notch, or series of notches, that may form tubes along the aperture's outer lip.  They prey upon worms and shells are often heavily encrusted with coralline algae.

WARTY FROG SHELL

GRANULATED FROG SHELL

Bursa rosa

ROSY FROG SHELL

WINE-MOUTH FROG SHELL

BLOOD-STAINED FROG SHELL