Spatial Coverage
- Chedabucto Bay (N.S.)1
- Chesapeake Bay Region (Md. and Va.)1
- Chiloé (Chile)1
- Chincoteague Bay (Md. and Va.)1
- Chubut1
- Colombia1
- Columbia1
- Congo1
- Congo River1
- Costa Rica1
- Côn Đa̕o Island (Vietnam)1
- Crete (Greece)1
- Crimea (Ukraine)1
- Cross River State (Nigeria)1
- D'Entrecasteaux Islands (Papua New Guinea)1
- Doboy Sound (Ga.)1
- Ecuador1
- Ehime-Ken1
- Ehime-ken1
- English Channel.1
