Greenland sharks can live to 300, perhaps even longer, with a life span slowed by the deep cold of northern oceans. They reach sexual maturity around age 150, implying preteen sharks from the 19th century still roam today's waters.
Ninety percent of the largest sea creatures have disappeared by weight since marine life shared the oceans with Greenland sharks. Human activities have led to substantial marine life loss, with overfishing and exploitation threatening numerous species.
Humans are accountable for around 2.7 metric gigatons of life vanishing from the oceans, affecting marine ecosystems. Overexploitation, whaling, and climate change contribute to the decline in marine fish stocks and freshwater populations.
The vast majority of excess heat generated by the greenhouse effect is absorbed by the oceans, causing significant warming. This warming, due to human-induced climate change, has profound implications for marine life and ecosystems globally.
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