Original: They are capable of running rapidly in brief sprints up to 20 kilometres per hour (12.4 mph), diving up to 4.5 metres (15 ft), and climbing trees proficiently when young through use of their strong claws.
Simplified: They can sprint up to 20 kilometers per hour (12.4 mph), dive up to 4.5 metres (15 ft), and, when they are young, climb trees with their strong claws.