Derasa Giant Clam (South Pacific) Sponges and a distinctive ring forms

and a distinctive ring forms behind the eye which is ringed in blue

It has an elongated

fine tentacles

This coral receives most of its energy by utilizing the photosynthetic algae contained within its tissues

Derasa Giant Clam (South Pacific) Sponges and a distinctive ring formsThe Tridacna clams are exquisitely colored, very uncommon and highly sought after. They make incredible display animals and thrive under reef conditions. They are peaceful and do not bother any other animal. If threatened they can close their shell tightly. Healthy animals should have a strong response if shadowed or touched, although once established they may become conditioned and show less inclination to close. They will attach themselves to rock