Blue Planet II
Sign in to watch this content please.
- Episode
- Ep5 - Green Seas
- Broadcast Info
- 2017 (58 mins)
- Description
- In our green seas, competition is fierce. Sunlight powers vast kelp forests, mangroves, prairies of sea grass and blooms of algae. Here animals must fight for space and food. In kelp forests, a common octopus must become the ultimate escape artist to avoid its nemesis, the pyjama shark; and a Garibaldi Damselfish defends its seaweed garden from marauding sea urchins - but sea otters prove an unlikely ally. On prairies of sea grass, tiger sharks play a game of cat-and-mouse with green turtles. This keeps the sea grass healthy. In shrubby meadows of seaweed, a vast army of spider crabs emerges from the depths for an annual mass moulting, while trying to avoid predation from monster, up to four-metre-long stingrays. And male giant cuttlefish compete for a mate... while smaller male wins by pretending to be female himself. In the mangroves, a mantis shrimp abandons his mate of possibly 20 years for a larger female. Elsewhere, dolphins, whales, sea lions and birds race to a feast - vast shoals of plankton eating fish attracted by a bloom of microscopic algae.
- Genre
- Research; Biology; Natural History; Climate
How to cite this record
The Open University, "Blue Planet II". https://learningonscreen.ac.uk/ou/search/index.php/prog/229163 (Accessed 10 Jan 2025)