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Spatial Coverage
- Gulf Intracoastal Waterway17
- Mexico, Gulf of16
- Caribbean Sea12
- North Pacific Ocean11
- Long Island Sound (N.Y. and Conn.)8
- Ontario, Lake (N.Y. and Ont.)7
- Atlantic Intracoastal Waterway6
- Saint Lawrence River6
- Saint Lawrence Seaway6
- Bering Sea5
- Florida5
- Huron, Lake (Mich. and Ont.)5
- Michigan, Lake5
- North Atlantic Ocean5
- Superior, Lake5
- Alaska, Gulf of (Alaska)4
- Dixon Entrance (B.C. and Alaska)4
- Galveston Bay (Tex.)4
- Louisiana4
- Puerto Rico4
