Detail of anchor coral tentacles (Euphyllia sp.) growing on a reef in Indonesia. This area is known for its high marine biodiversity.

abstract anatomy anchoral coral anemone animal animal themes anthozoa aquatic beauty in nature biodiversity close up cnidaria colony color image coral coral triangle day detail euphyllia euphyllia ancora extreme close up full frame growth hammer coral hard coral horizontal indo pacific ocean indonesia invertebrate lembeh strait living organism magnification marine biology nature no people ocean outdoors pattern photography polyp science scleractinia sea sea life southeast asia species stony coral sulawesi symbiotic relationship tentacle texture threatened species tropical climate underwater wilderness wildlife zoology