Marine biologists are wildlife biologists who study marine wildlife. They spend a considerable amount of time in the field gathering data and studying animals in their natural habitats. As of 2012, the most common places where they work include state governments (34%), federal governments (24%), in research and development (10%), in management, scientific, and technical consulting services (7%), in colleges or universities (6%), and the local government (4%).
(Source: US Bureau of Labor Statistics)