15th October 2024
Rewilding the sea – seawilding – is as important as rewilding the land. Rewilding Britain explains why. “Britain’s seas used to be home to the biggest creatures on the planet: blue, humpback, fin, sperm, bottlenose and sei whales. Our rich, soupy waters helped fuel a thriving, diverse ecosystem, attracting huge numbers of small fish, and in turn massive balls of herring and whiting, which would bring these ocean giants to our shores to feed. Like the decline of large mammals on land, whales were hunted to near local extinction for their meat and oil. Alongside the decline of these very visible giants, all marine ecosystems are suffering. The UK has lost around 92% of its seagrass meadows, 95% of its native oyster reefs and nearly all its kelp in regions like Sussex where it once was abundant” (1)
In February 2023 three areas of water of the coast of England were given the status of Highly Protected Marine Areas (HPMA) where all activities such as fishing, mining and laying cables that might damage the sea bed, are banned. The aim is to protect marine biodiversity by allowing seaweeds such as kelp and sea creatures to recolonise the sites. That said, these areas cover only 0.5% of English seas.
There are other projects where a proactive approach has been taken by actively replanting new kelp meadows – such as the Sussex Kelp Recovery Project – or in the Humber Estuary by creating oyster reefs to serve as nurseries for the reintroduction of native oysters (2)
The Green Tau 