TV Guide for Yesterday Friday 10 in Sky Nature

The Mesoamerican Reef in the Caribbean Sea, which has been jeopardised by overfishing and tourism, putting its sharks and turtles in grave danger.

The push to increase the population numbers of Ontario's eight turtle species, seven of which are listed as endangered. But turtles are slow and not entirely smart.

A dam is an engineering feat that controls massive amounts of water. But as this episode shows, it can also wreak havoc on the animals that call those waters home.

Documentary exploring how life manages to exist in the world's varied habitats, beginning with a new species perfectly suited to inhabit the mighty Drakensberg, one of South Africa's most impressive landscapes.

Felines and canids clash across the world. This edition dives into direct battles and strategies to steal food. Intelligence and strength decide who reigns in each territory.

A look at life in tropical forests, featuring a poison dart frog launching a toxic barrage and turf war between jaguars and caimans.

Lizzie Daly says goodbye to the tropics as she heads to the cool southern-coast waters, coming face to face with grey nurse sharks, shape-shifting cuttlefish and blue whales.

The amazing world of the flying squirrel, typically found along the shores of Lake Erie, but now moving their territory towards Lake Ontario.

How the elk got a second chance. It went extinct in Ontario, but is now recovering after being re-introduced.

Documentary following daily life at Monkey World Ape Rescue Centre in Dorset, where staff look after monkeys, chimps, orangutans and other primates.

Documentary following daily life at Monkey World Ape Rescue Centre in Dorset, where staff look after monkeys, chimps, orangutans and other primates.

Heading to America's far north for a look at its waterways' fighters, as a spring thaw pits eagles against herons and dragonfly nymphs against venomous water bugs.

Lizzie Daly sets off on the final leg of her journey to where Australia's desert meets the Indian Ocean, confronting challenges of survival on the way and diving with tiger sharks and manta rays.

A look at how sharks are more complex and intelligent than generally believed, and not simply mindless eating machines prone to attacking humans.

The powerful Mwamba lion pride has long dominated the west bank of the river in Zambia's Luangwa Valley. But now this family is facing an uncertain future.

Examining how airborne creatures navigate the skies, with some routes being short and others across hundreds of miles.

Documentary following daily life at Monkey World Ape Rescue Centre in Dorset, where staff look after monkeys, chimps, orangutans and other primates.

Documentary following daily life at Monkey World Ape Rescue Centre in Dorset, where staff look after monkeys, chimps, orangutans and other primates.

Heading to America's far north for a look at its waterways' fighters, as a spring thaw pits eagles against herons and dragonfly nymphs against venomous water bugs.

Lizzie Daly sets off on the final leg of her journey to where Australia's desert meets the Indian Ocean, confronting challenges of survival on the way and diving with tiger sharks and manta rays.

A look at how sharks are more complex and intelligent than generally believed, and not simply mindless eating machines prone to attacking humans.

The powerful Mwamba lion pride has long dominated the west bank of the river in Zambia's Luangwa Valley. But now this family is facing an uncertain future.

Examining how airborne creatures navigate the skies, with some routes being short and others across hundreds of miles.

Documentary following daily life at Monkey World Ape Rescue Centre in Dorset, where staff look after monkeys, chimps, orangutans and other primates.

Documentary following daily life at Monkey World Ape Rescue Centre in Dorset, where staff look after monkeys, chimps, orangutans and other primates.

A look at Australia's Wild West - The Kimberley - the animals who live there and tracking the quests of those working to protect them. Cameras follow wallabies, koolamana lizards and crocodile hatchlings as they face the wild river's dangers and discover the true power of this waterway.

The clinic deals with the aftermath of a flood in Brisbane. A baby kangaroo is in need of round-the-clock care and Karina tackles the turtle waiting list.

Examining how airborne creatures navigate the skies, with some routes being short and others across hundreds of miles.

The powerful Mwamba lion pride has long dominated the west bank of the river in Zambia's Luangwa Valley. But now this family is facing an uncertain future.

An exploration of the remote wonder of the Exuma Cays, the Bahamas' first ocean park - a largely unexplored region made up of hundreds of tiny islands.

The amazing world of the flying squirrel, typically found along the shores of Lake Erie, but now moving their territory towards Lake Ontario.

How the elk got a second chance. It went extinct in Ontario, but is now recovering after being re-introduced.

A look at Australia's Wild West - The Kimberley - the animals who live there and tracking the quests of those working to protect them. Cameras follow wallabies, koolamana lizards and crocodile hatchlings as they face the wild river's dangers and discover the true power of this waterway.

The clinic deals with the aftermath of a flood in Brisbane. A baby kangaroo is in need of round-the-clock care and Karina tackles the turtle waiting list.