• California kelp forests have declined since 2013‑17 marine heat wave. • Recovery remains limited despite restoration efforts by scientists and volunteers. • Kelp loss mirrors global warming impacts on marine ecosystems. • Heat‑wave damage and rising sea temperatures threaten future resilience. • Conservation strategies must address climate change and habitat restoration.

Article Summaries:

  • California’s kelp forests, once thriving along the coast, have suffered a steep decline since the 2013‑2017 marine heat wave. Despite coordinated restoration work by scientists, fishermen, tribal groups, volunteer divers and conservationists, recovery has been limited. The loss is not confined to California; it mirrors the global spread of mega‑wildfires, driven by rising temperatures. Scientists note that roughly 90 % of the heat generated by burning fossil fuels is absorbed by the ocean, exacerbating marine warming and threatening kelp habitats worldwide. The crisis underscores the broader impact of climate change on both terrestrial and marine ecosystems.

Sources: