Samuel Freeman LaBudde is an American biologist. He was awarded the Goldman Environmental Prize in 1991 for his landmark efforts on preserving dolphins and other marine species. He began his career as a biologist by spending six months at sea clandestinely videotaping the practice by tuna fishermen of encircling and killing dolphins. This exposed the largest slaughter of marine mammals in history and sparked a successful consumer boycott, forcing major tuna brands to accept only dolphin-safe fish and prompting the U.S. Congress to enact bans on the encirclement of dolphins by U.S. vessels, and imports of dolphin-deadly tuna.