Mr Hammond tries to take a picture of a blue whale, but gets too close - all that can be seen is a patch of blue! Andy heads to the Atlantic Ocean in his safari sub to get a new photo, learning all about the blue whale and its immense size in the process - but will he be able to take his picture and make it back in time?

Andy goes to Niue Island in the South Pacific to find out where sea kraits lay their eggs.

Andy heads to Japan and embarks on an epic adventure in search of a Japanese mudskipper.

Andy jets off to the flooded forests of North America in search of wood duck chicks.

Andy blasts off in his safari sub to the Galapagos to see how sea lions deal with flies.

Andy heads to the Pacific coast of California in search of a sarcastic fringehead.

Andy heads to the Andes in South America to paint some flamingos in a mountain lake.

Andy jets off to the South of France to see where damselflies lay their eggs.

Andy searches Costa Rica for a glass frog to see how it looks after its young.

Andy blasts off in his safari sub to Antarctica in search of a Weddell seal and her pup.

Andy heads to the Atlantic Ocean near Florida in search of bottlenose dolphins.

Andy embarks on an adventure to Bolivia in South America in search of a caiman eggshell.

Andy blasts off in his safari sub to Antarctica in search of chinstrap penguin chicks.

Andy jets off in his safari mobile to the rainforest of Brazil in search of a pygmy gecko.

Andy heads to the island of Barbados to help rescue some baby Hawksbill turtles.