Built to feed exclusively on corals like this spindly gorgonian, a translucent 1.7-inch-long (4.3-centimeter-long) Phyllodesmium iriomotense houses its branching digestive gland within tentacle-like cerata—outgrowths the animal can shed if under attack. This species is one of the few colorless nudibranchs.

See more photographs from the June 2008 feature story "Living Color."

摄影者：Jennifer Hayes
以细长珊瑚为食的半透明裸腮亚目动物
专门以这种细长的柳珊瑚为食，一只半透明的1.7英寸（4.3厘米）长的“Phyllodesmium iriomotense” （一种海蛞蝓）将其分枝状的消化腺退入触手一样的裸腮中——一旦受到攻击，这种动物就会退到其中避难。这是仅有的几种无色的裸腮亚目动物之一。