High-res mad-as-a-marine-biologist:

Animals in captivity: Sailfin Iguana [Hydrosaurus spp.]
These relatively large lizards are named after the sail-like structure on their tail. They are native to the Philippines, Indonesia and Papua New Guinea where generally found near water, such as rivers. They are the only members of the Hydrosaurinae subfamily.

mad-as-a-marine-biologist:

Animals in captivity: Sailfin Iguana [Hydrosaurus spp.]

These relatively large lizards are named after the sail-like structure on their tail. They are native to the Philippines, Indonesia and Papua New Guinea where generally found near water, such as rivers. They are the only members of the Hydrosaurinae subfamily.