Large triton trumpet shells hand selected and photographed for coastal home decorating and for use as a focal point in rooms with a seashell themed decor.   These  Atlantic Triton's Trumpet Shells and Pacific Triton Trumpet Seashells are sold in sizes from 6 inches up to 12 inches in length.  Tritons and are from the family "Cymatidae". Triton seashells predominantly dwell in tropical and warm waters. Triton trumpet shells are one of the world's largest living gastropods. Their shells are mostly thick and solid.