Visit this attraction before or after visiting the Seattle Aquarium, seven piers to the south along the waterfront. The aquarium is full of marine life, while this museum is full of the people who devote their lives to the study of the deep. Interactive exhibits encourage visitors (kids especially) to discover the worlds of commercial fishing, container shipping, navigation and ocean trade. Admission is USD7 for adults, USD5 for students 5-18 and seniors, USD2 for children 2-4, free for children under two.