It is a most visited park of which the twin crater lakes of Balinsasayao and Danao are located, separated only by a narrow mountain ridge.

Talinis has a rich biodiversity that is threatened by illegal logging, "kaingin", increased tourist activity and the gradual build-up of houses near its forested areas.

Talinis contain freshwater shrimp, snails, carp and tilapia species, and its forest system is home to endemic and rare wildlife.

There are 91 tree species, 18 of which are commercially important, including Alphonsea arborea, Elaeocarpus monocera, Pometia pinnata, and Phyllocladus hypophyllus and tigerwood.

Common fauna include boars, civets, chickens, pigeons, monkeys, sunbirds, monitor lizards, bar-bellied cuckoo-shrikes, leopard cats, and the brown weaver ant.