Photograph by Tim Laman In the waters of the Fiji Islands, an emperor shrimp and a commensal crab nearly vanish in the calico pattern of a large leopard sea cucumber.

• 在斐济群岛的水域中，帝王虾和寄居蟹消失隐秘在大豹海参皮肤上豹纹中。海参用它皮肤上的粘液提供食物给这些甲壳类动物，而当它受到威胁的时候，则会把有毒污秽的胃部器官喷射出来，以保护自己。