The team celebrate the return of otters across the UK with some special footage.
A hunt for the mighty anaconda goes wrong when Steve is attacked by an unseen predator.
A sea lion causes an evacuation from a tour boat and the otter pups get their first jabs.
Cameraman Charlie Hamilton James hunts for otters on the Isle of Skye.
A hidden 'carcass-cam' shows the ruthless efficiency of the white-backed vultures.