Barney and Gemma meet the sports stars of the sea - sprinters, jumpers and even gymnasts!
Barney and Gemma show that coral reefs are like our cities - and everyone has a job to do.
An extreme mission to the unexplored volcanoes of one of the world's most dangerous areas. Can the team uncover secrets that could save countless lives? Towering above the hostile border between the Democratic Republic of Congo and Rwanda are the Virunga Mountains, home to some of the least explored volcanoes in the world. Continuous wars and devastating natural disasters have made these volcanoes impossible to reach. Now a team of brave scientists and mountaineers are on a mission to study one of the world's most dangerous areas.
Evan is in the Amazon rainforest in Peru to help release a family of howler monkeys back into the wild. He also nurses an injured baby spider monkey.