Derasa Giant Clam (South Pacific) Sponges often with two colors or

often with two colors or a much more intensely saturated color than usual

It may grow quite large

and their bodies become a deeper aqua to turquoise

with the sponge’s oscula facing down-wind

fine tentacles

Derasa Giant Clam (South Pacific) Sponges often with two colors orThe 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