Detail of a sponge growing on a reef in Lembeh Strait, Indonesia.

abstract animal animal behavior animal patterns animal themes biodiversity biology calcium carbonate camouflage climate change close up color image coral triangle critter day detail ecology encrusting sponge extreme close up filter feeders full frame growth habitat horizontal indonesia lembeh strait macro marine biology nature no people ocean outdoors pacific ocean parazoan photography pore porifera porous remote location science sea sea life sea sponge southeast asia sponge sulawesi tropical climate undersea underwater wilderness wildlife zoology