Gotomeer is a land-locked, shallow saline lagoon that measures 1.5 km² (150 hectares). It is located within the Washington Slagbaai National Park, on the southern border, about 17 kilometres northwest of Kralendijk.
Gotomeer has been designated as a wetland of international importance (Ramsar site no. 202). The area is an important habitat for many species of breeding birds, including the White-cheeked Pintail (Anas bahamensis), American Oystercatcher (Haematopus palliates), Black-winged Stilt (Himantopus himantopus), Wilson’s Plover (Charadrius wilsonia), Snowy Plover (Charadrius alexandrinus), Laughing Gull (Larus atricilla) and Little Tern (Sterna albifrons). It also supports migrant shorebirds which nest in North America, including plovers and sandpipers. Common migrant species include the Black-bellied Plover (Pluvialis squatarola), Semipalmated Plover (Charadrius semipalmatus), Whimbrel (Numenius phaeopus), Ruddy Turnstone (Arenaria interpres), Shortbilled Dowitcher (Limnodromus griseus), Sanderling (Calidris alba), Semipalmated Sandpiper (Calidris pusilla), Least Sandpiper (Calidris minutilla) and Stilt Sandpiper (Micropalama himantopus).
Gotomeer provides important foraging grounds for the Caribbean Flamingo (Phoenicopterus ruber). The larvae of the Brine Fly (Ephidra cinerea) that lives in the muddy bottom of the salt ponds are the main food source of the Caribbean Flamingo. The flamingos also breed at Gotomeer, which is one of only two breeding sites on the island (the other is Pekelmeer).