In the North Sea's depths, small depressions, seemingly formed by leaking methane, have puzzled researchers for years. However, recent findings propose an unexpected explanation: these pits might be the handiwork of foraging porpoises, challenging long-held assumptions about the sea's geological features.

'Porpoise-ful' mistake: Porpoises, not methane, may be responsible for mysterious pits in North Sea

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'Porpoise-ful' mistake: Porpoises, not methane, may be responsible for mysterious pits in North Sea