marisma

plural marismas

1. A tidal or saltwater marsh.

   Mallard [...], in the marisma, nest in precisely similar situations, but their eggs number twelve or fourteen. Elsewhere their nests (being among bush or reedbeds) are less easily seen.

   1910, Abel Chapman, Walter John Buck, Unexplored Spain, page 409

   2 more examples

   ... waters of the marisma. Whilst photographing the latter Mr. Read was fortunate enough to get a good view of the famous wild camels of the marisma galloping away in the distance, the herd numbering some sixteen or eighteen head.

   1919, The Ibis, page 163

   6. Grasslands, bordering the marismas but usually separated from them by a belt of rushes Juncus spp. 7. The Carex-Scirpus zone of the marismas, flooded for part of the year by fresh water carried largely by the Madre de las Marismas, which flows parallel[…]

   1980, Erik Carp, Directory of Wetlands of International Importance in the Western Palearctic, IUCN, →ISBN, page 359