Adult bull Galapagos sea lion (Zalophus wollebaeki) posturing on Fernandina Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

galapagos zalophus wollebaeki fernandina island ecuador south america wildlife marine animal dominance posturing nature conservation marine life ocean coastal island ecosystem sea animal behavior mammals endangered species fauna animal communication tropical biodiversity aquatic natural habitat playful vocalization marine environment territorial behavior wildlife observation animal kingdom ecological balance natural world habitat animal interactions species protection marine biodiversity galapagos islands adult bull lion zalophus wollebaeki fernandina