By nature, any seasonal body of water is labeled as such because during part of the year, the land is dry, and during times of heavy rainfall, a lake forms. This inconsistency of environment is a challenge for sea-life as the dry seasons would cause the death of many of the previously thriving organisms. As a general rule, there are very limited species that can thrive in an alkaline lake environment These include but may not be limited to planktonic and benthic algae, brine shrimp, brine flies, bacteria and a variety of birds.
Brackish water is often considered an extreme condition within which very few life-forms can survive. In a seasonally saline lake or flat, each time the water evaporates, the salt deposits are left behind and continue to accumulate thus making the water even less friendly to animal life.
Carnivores
African clawless otter
Cameroon clawless otter
North american otter
La plata otter
Huillin
Common otter
Speckle-throated otter
Hairy-nosed otter
Indian smooth-coated otter
Rodents
Libyan jird
Fat sand rat
Thin sand rat
Read more at the list of biomes of the world...