The species' average lifespan is from 25 to 30 years. FEEDING: Monk seals eat a variety of fish, cephalopods and crustaceans, with common prey including reef fish, octopus, squid, lobster and eel.

A seal has been spotted "wrestling" a large eel for its lunch. Biology teacher Dr Jeremy Rowe filmed the seal after spotting it with something in the water off Portland Bill, Dorset, on Saturday.