The veteran broadcaster related an incident early in his career when he was given faulty scuba-diving equipment.

David Attenborough has described the human impact on the deep ocean floor as “unspeakably awful” in a conversation with Prince William to mark the launch of the veteran broadcaster’s latest documentary.

Prince William and Sir David Attenborough explore the urgent peril of the world’s oceans, ahead of World Oceans Day and William’s speech at a global conservation summit