spectacled caiman (caiman crocodilus) with its head sticking out of the water, caño negro wildlife refuge, costa rica

alligator costa rica caaplusmn negro crocodylus water nature refuge wildlife reptile swamp natural reserve exotic ecosystem biodiversity animal scales predator powerful fierce dangerous threatening adventure ecotourism sustainability conservation ecological beauty green textures aquatic reptilian creepy chaotic unique mysterious reflection life head river tropical spectacled caiman crocodilus sticking frio cano caño cao cañoo