Habitat and evolutionH. semperi is known to be found only in the waters of Lake Taal (formerly known as Lake Bombon) in the province of Batangas in the Philippines. The only freshwater sea snake in the country, it lives the entirety of its life within the confines of the lake, feeding and breeding in its slightly acidic waters.
Habitat and development of H. semperi are restricted to the waters of Lake Taal (formerly known as Lake Bombon) in Batangas, Philippines. It is the sole freshwater sea snake in the country, living its entire life within the lake's boundaries, feeding and reproducing in its acidic environment.