Jouan & Rius / View of river from boat, Tortuguero NP, Costa Rica

Jouan & Rius / Buttress roots of giant tree in rainforest, Tortuguero NP, Costa Rica

Jouan & Rius / Low angle shot looking up through canopy showing crown shyness / gaps between trees , Tortuguero NP, Costa Rica

Thomas Marent / Strawberry Poison Dart Frog (Oophaga pumilio) on mushroom, Tortuguero National Park, Costa Rica

Thomas Marent / Red-eyed Tree Frog (Agalychnis callidryas) with half closed eyelid, Tortuguero National Park, Costa Rica

Mary McDonald / Bare-throated Tiger-Heron (Tigrisoma mexicanum)chick in nest ready to fledge. Tortuguero National Park, Costa Rica.

Martin van Lokven / Spectacled Caiman (Caiman crocodilus) eye, Tortuguero National Park, Costa Rica

Martin van Lokven / Red-eyed Tree Frog (Agalychnis callidryas) on heliconia, Tortuguero National Park, Costa Rica

Martin van Lokven / Red-eyed Tree Frog (Agalychnis callidryas) on heliconia, Tortuguero National Park, Costa Rica

Martin van Lokven / Spectacled Caiman (Caiman crocodilus), Tortuguero National Park, Costa Rica

Martin van Lokven / Red-eyed Tree Frog (Agalychnis callidryas), Tortuguero National Park, Costa Rica

Martin van Lokven / Red-eyed Tree Frog (Agalychnis callidryas), Tortuguero National Park, Costa Rica

Martin van Lokven / Red-eyed Tree Frog (Agalychnis callidryas) eggs, Tortuguero National Park, Costa Rica

Kevin Schafer / Green Sea Turtle (Chelonia mydas) hatchling going out to sea, Tortuguero National Park, Costa Rica

Kevin Schafer / Canals and tropical rainforest, Tortuguero National Park, Costa Rica

Thomas Marent / Green Heron (Butorides virescens), Tortuguero National Park, Costa Rica

Edwin Giesbers / Tourists travelling by boat on river through rainforest, Tortuguero National Park, Costa Rica

Edwin Giesbers / Tourists traveling by boat along river through tropical rainforest, Tortuguero National Park, Costa Rica

Edwin Giesbers / Tourists travelling by boat on river through rainforest, Tortuguero National Park, Costa Rica

Edwin Giesbers / Double crested basilisk / Basilisk lizard (Basiliscus plumifrons), Tortuguero National Park, Costa Rica

Edwin Giesbers / Double crested Basilisk / Green Basilisk Lizard {Basiliscus plumifrons}, Tortuguero National Park, Costa Rica

Edwin Giesbers / Tourists travelling by boat in Tortuguero National Park, Costa Rica

Edwin Giesbers / Double crested Basilisk / Green Basilisk Lizard {Basiliscus plumifrons} on tree, Tortuguero National Park, Costa Rica

Edwin Giesbers / Small rowing boat on river in Tortuguero National Park, Costa Rica

Jouan & Rius / Red-eyed tree frog (Agalychnis callidryas), rainforest habitat, Tortuguero NP, Costa Rica

Jouan & Rius / Buttress roots of giant tree with man for size comparison, Tortuguero NP, Costa Rica

Jouan & Rius / Hondura white bats (Ectophylla alba) under leaf, Tortuguero NP, Costa Rica

Jouan & Rius / Green heron (Butorides virescens) in the waterways of Tortuguero NP, Costa Rica

Jouan & Rius / Low angle shot up trunk of tall Kapok tree (Ceiba pentandra), Tortuguero NP, Costa Rica

Jouan & Rius / Boat-billed heron (Cochlearius cochlearius) from below, showing the bill shape, Tortuguero NP, Costa Rica

Jouan & Rius / Male Double crested basilisk (Basiliscus plumifrons) on branch, Tortuguero NP, Costa Rica

Jouan & Rius / Bare throated tiger heron (Tigrisoma mexicanum) stalking prey in swamp, Tortuguero NP, Costa Rica

Jouan & Rius / Female Double crested / Plumed basilisk (Basiliscus plumifrons), Tortuguero NP, Costa Rica

Jouan & Rius / Bare throated tiger heron (Tigrisoma mexicanum) with prey in swamp, Tortuguero NP, Costa Rica

Thomas Marent / Green Basilisk (Basiliscus plumifrons) lizard male, Tortuguero National Park, Costa Rica

Fabio Liverani / Red eyed tree frogs mating {Agalychnis callidryas}, Tortuguero NP, Costa Rica

Juan Manuel Borrero / Jesus Christ lizard with flaky skin {Basiliscus basiliscus} Tortuguero NP, Costa Rica

Fabio Liverani / Green basilisk / Jesus christ lizard {Basiliscus basiliscus} Tortuguero NP.

Fabio Liverani / Common iguana {Iguana iguana} in tree, Tortuguero NP. Costa Rica

Tom Vezo / Little Blue Heron (Egretta caerulea) juvenile perching in tree, Tortuguero National Park, Costa Rica

Tom Vezo / Rhinoceros Beetle (Dynastinae) amid tree leaves, Tortuguero National Park, Costa Rica

Michael & Patricia Fogden / Tourists in boat at Tortuguero Lodge National Park, Costa Rica