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Off Brazil's eastern coast, Trindade Island plays host to a unique yet endangered land crab species, Johngarthia lagostoma. A study published in the journal Marine Ecology mapped out key conservation areas crucial for the species' survival, shedding light on its natural history and underlining the urgency for targeted preservation efforts.

The ancient group of marine predators, which first appeared in the fossil record 440 million years ago, are facing a critical juncture in their existence. Though they have been resilient to other mass extinctions, the current one is caused by decades of industrial overfishing along with the growing demands of the shark fin trade. It has put those shark and ray species accessible to fisheries at risk of extinction, with far-reaching consequences for ocean ecosystems.

Over the past two decades, sharks have become emblematic of the world's threatened wildlife, leading to heightened scientific, regulatory and public scrutiny. However, a recent study challenges the effectiveness of these protective measures, revealing that global shark mortality has not only persisted but increased, despite increased regulations and finning bans.