Original air date: 26 November 2017
| Start time | Theme, Contents | More detailed description (Filming location) |
|---|---|---|
| 0’25 | Introduction | Life waking up from the dark winter |
| 1’30 | Starfish spawning | |
| 1’45 | Sea cucumbers | Speed up camera |
| 2’40 | Sea pens | |
| 3’10-20’20 | Kelp forest | |
| 3’10-4’12 | Kelp | Kelp defined |
| 4’35-9’50 | Kelp forest | Cape – Southern Africa |
| 4’55 | Octopus | Preying on a crab |
| 7’05 | Pyjama shark and octopus | |
| 7’50-8’15 | Octopus suffocating shark | |
| 8’30-9’30 | Octopus hiding | Using shells picked from surroundings to hide |
| 10′ | Kelp & garibaldi | North America |
| 11’15 | Garibaldi farming | Seeing off intruders regardless of size – – rays (12’15) |
| 12’30 | Sea urchins | |
| 13’45 | Night – predators | Torpedo rays |
| 15’30 | Sea urchins | Leave behind barren ground – eat all the kelp |
| 16’25-19’50 | Sea otters | Feed on shellfish – like sea urchin, only otters at sea, rarely leave the sea |
| 20’20-38’20 | Sea grass | |
| 20’20 | Sea grass | Tiger sharks preying on green turtles, keeping them on the move – avoiding them overgrazing the grass —(Australia) |
| 23’20 | Spider crabs | March across sea grass planes, break out of old shell – growing (until 29′) |
| 23’20-29′ | Sting rays | Preying on the crabs |
| 29’45-34’35 | Giant cuttlefish | Breeding – Tricking the males into thinking he is a she so he can get near the female closest to him (33’30) |
| 34’35-38’20 | Weedy sea dragon | A male (seahorse) caring for young, shrimp is the favourite food |
| 38’45-45′ | Mangrove forests | Those have the richest nurseries |
| 40’40 | Zebra mantish shrimp | Inside the hole (41’55-42’32), Leaves his burrow for a better one (43’25-44’05) |
| 43’40 | Mantis shrimp ** | Male leaves burrow for a larger female — the female being left behind sends a distress signal |
| 45’10-50′ | Phytoplankton | |
| 45′ | Dolphins & sea lions | |
| 46’50 | Anchovies | Feeding frenzy |
| 47’40-49’55 | Humpback whales | |
| 50′-57′ | Into the blue | |
| 50′ | Time lapse equipment – The (undersea) forest floor | |
| 51’15 | Filming the common octopus | |
| 57′ | Coming up | The coasts |