THESAURUS
sandbar
ait, archipelago, atoll, bank, bar, cay, continental island, coral head, coral heads, coral island, coral reef, flat, ford, holm, insularity, ironbound coast, island, island group, islandology, isle, islet, key, ledges, lee shore, oceanic island, pitfall, quicksands, reef, rockbound coast, rocks, sand, sand dune, sand pile, sandbank, sands, shallow, shallows, shelf, shoal, shoal water, shoals, tidal flats, undercurrent, undertow, wetlands