A number of species of frog and toad are dependent on small seasonal pools and marshes for breeding, spending the rest of the year on land. Various birds also visit them, including grebes and ducks. Some waterbirds may also breed in these seasonal marshes or pools. Some small land birds also like these areas to breed in.
These marshes include natural water meadows, which are valuable to humans for grazing cattle. In tropical areas, seasonal pools can become waterholes, attracting a variety of animals, up to and including elephants. As these pools and marshes are seasonal, many of the animals that frequent them are at least somewhat migratory, visiting the pools during the wet season and moving to more permanent water when they dry up.
African clawless otter
Cameroon clawless otter
North american otter
La plata otter
Indian smooth-coated otter
Giant brazilian otter
Dugongs, manatees, and sea cows
Read more at the list of biomes of the world...