Four one-month-old otters get shown how to swim for the first time.
Colchester Zoo is home to four smooth-coated otter pups who are only a month old.
For the first few weeks the pups stayed in their underground den until their eyes opened.
But since then they have been spending more time above ground and as you can see from our video experienced their first swimming lesson.
The otters are taught by being picked up by the scruff of the neck and dunked into the water, this may been a little rough but the pups are extremely buoyant and this is very natural behaviour.
The smooth-coated otter is classified as Vulnerable on the IUCN Red List 2004 due to the loss of suitable habitat.
• Sad news - Colchester Zoo announces death of white rhino Flossy read here.
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