The water of the outer lake, although sulfur bubbles up from some spots along the shore, is fresh and is known to be the habitat of many fishes like carp and eel. The lake is also the home to the only known species of sea snakes (Hydrophis semperi) which have somehow learned to adapt to fresh water. Maliputo and tawilis (Harengula tawilis), the more popular fishes found in the lake, also have salt-water fishlike characteristics.
Taal Lake, Philippines