Derasa Clam Shell (8”-9”) banded typically with an elongated aperture

typically with an elongated aperture in the first whorl of the shell and a number of deep folds on the inner lip

the Lightning Whelk has a left-handed shell (shell opening to the right with shell spire pointing “up”)

Poca coral consist of beautiful ruffled petal-like structures

They can be found from West Mexico to Peru

rather than with a toothed hinge as is more common in other bivalves

Derasa Clam Shell (8”-9”) banded typically with an elongated apertureThe Derasa Clam (Tridacna derasa) is the second largest clam of the Tridacna clams. It is also one of the easier clams to care for. This clam can grow to about 20 inches in captivity. They typically have a brown gold coloration with white stripes or spots. It may also have bright blue along the outline of the mantel.