This course introduces the biology of Costa Rica's marine mammals, including whales, dolphins, manatees, fur seals, and sea lions. Topics covered include the evolution, physiology, behavior, and ecology of marine mammals. Particular attention is paid to current topics in the management and conservation of cetaceans (whales and dolphins) in Costa Rica within marine protected areas or local coastal communities. Fieldwork will focus on basic ecological monitoring techniques and primary care on marine mammals’ stranding.