Episodes list
Season
Overview: The third series of this nature documentary uses the very latest in underwater filming techniques to reveal brand new and untold stories from magical underwater worlds focusing on five major underwater habitats: the tropical seas, temperate seas, polar seas, high seas and deep seas.
United Kingdom,
United States of America,
Germany,
France,
Greece
Documentary
BBC One
2026
BBC Studios Natural History Unit,
BBC America,
ZDF,
France Télévisions,
Skai
Content ⇀