Crustacea and related animals-- Invertebrate Zoology Marine pollution-- Pollution in Ocean Marine animals Adaptation (Physiology) Animal ecology-- Animals of specific environments Aquatic ecology-- Fresh water ecology-- Pond ecology-- Limnology (biology)-- groundwater ecology Chloroplalst Ecology Endosymbionts Environmental ecology-- Island ecology-- Desert Ecology Marine animals behaviour Marine ecology Marine plants Photosynthesis Physical adaptation of animals Sacoglossans Water pollution halophytes metabolic capacity