Sharks have survived every mass extinction for roughly 450 million years, outlasting the dinosaurs by a vast margin — yet a 2025 global study found that more than a third of shark species alive today are severely threatened, mostly by fishing nets and finning

Sharks have been swimming in Earth’s oceans for roughly 450 million years. They were here long before the dinosaurs, they survived every great mass extinction that followed, and they outlasted the dinosaurs by a vast margin. Yet a global study compiled by hundreds of scientists has found that about a third of sharks and their [...] The post Sharks have survived every mass extinction for roughly 450 million years, outlasting the dinosaurs by a vast margin — yet a 2025 global study found that more