I hope this can help you out...
There is only a few that can survive.
One I know of is a Crab eating frog from Malaysia.
They live in the mangroves and eat the crabs that live there.
Do a search on mangrove wildlife.
http://www.ecologyasia.com/Vertebrates/crab-eating_frog.htm
http://www.nps.gov/ever/eco/herps.htm
Southern Leopard Frog (Rana utricularia)
Common in all freshwater habitats and in solution holes in hardwood hammocks. Also occurs in brackish water. Abundant, often seen at Shark Valley and Anhinga Trail.
http://blackwater.fws.gov/Reptilepg.html
Fowler's Toad
Bufo woodhousei fowleri
Abundant throughout the Refuge, in freshwater and brackish marsh areas, fields and woods. Feeds largely on insects. Primarily nocturnal.
Southern Leopard Frog
Rana utricularia
Common in shallow freshwater habitats. Also at edge of brackish marsh. Ventures well away from water in summer.
Pickerel Frog
Rana palustris
Common in freshwater and brackish marsh. Also found in fields and wood margins.
http://www.frommers.com/destinations/bermuda/0091030379.html
Amphibians--Because of the almost total lack of natural freshwater ponds and lakes, Bermuda's amphibians have adapted to seawater or slightly brackish water. Amphibians include the tree frog (Eleutherodactylus johnstonei and Eleutherodactylus gossei), whose nighttime chirping newcomers sometimes mistake for the song of birds. Small and camouflaged by the leafy matter of the forest floor, the tree frog appears between April and November.
http://museum.nhm.uga.edu/gawildlife/amphibians/caudata/sirenidae/slacertina.html
Greater Siren, Siren lacertina
"This is one of a few species of amphibians known to tolerate brackish water."
http://www.nafcon.dircon.co.uk/euro_urodela.html
Palmate Newt
W. Europe as far as Scotland and NW Iberia. 2½-4"?
See above for remarks on similarity to Montandon's Newt.
The main difference is the shorter tail filament (only up to 5mm) and webbed feet in the males. Females lack the tail filament and have a narrower caudal fin and smaller spots on the body. It is highly adaptable, living in ponds, marshes and brackish water in coastal areas but also occupying mountainous regions of up to 2,000 m. Life cycle and diet are the same as Montandon's.
http://www.environmentyukon.gov.yk.ca/fishwild/amphibians.shtml
Rough-skinned Newt (Taricha granulosa)
The Rough-skinned Newt has a rough, dark brown back, and a bright orange or yellow belly. It breeds in spring in shallow ponds, bogs and swamps. Rough-skinned Newts are found near permanent ponds, including brackish water, or in open mixed coastal forests with lots of leaf litter and deadfall. Adults may also live in water.
http://www.nafcon.dircon.co.uk/euro_anurans.html
Painted Frog
http://www.dropbears.com/brough/Canetoad.htm