From plankton to seabirds, it’s bad news for foodwebs in the Pacific and coastal environments: there are some hints that the Blob may be back for another round. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

Clues about the possible reemergence of the Blob – a recurring Pacific marine heatwave – can be seen in this summer’s global ocean data.

In August 2025, the average sea surface temperature between 60 degrees south and 60 degrees north latitude reached 20.82°C (69.47°F), the third-highest for the month since records began, according to the EU’s Copernicus Climate Change Service . That figure was only 0.16°C (0.288°F) below the August 2023 record.

Most of the North Pacific stood out as a hotspot with vast stretches of ocean runn

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