Where Do These Ocean Giants Disappear To , North Atlantic: The Dark Ocean, 4 K UHD, BBC Earth

Basking sharks can grow to be up to 10 metres long and can weigh up to 5 tonnes. Despite their massive size, they are only ever seen for a few weeks per year, when they feed on plankton in the sunny waters during the spring months. Which begs the question, where do they go for the rest of the year Subscribe: , OceanMysteries, DeepOcean, Sharks Watch more: Best of BBC Earth Best Animal Fights Videos over 10 minutes Planet Earth III Frozen Planet II Blue Planet II in 4k Inspired by the Irish ancestors that ventured before him, underwater cameraman Ken OSullivan explores the dark depths of the North Atlantic and immerses the viewer in the mesmerising world of marine life explora br, br,