200 million years before the first dinosaurs appeared, there were abundant coral reefs around the world that were all teeming with diverse forms of life. And the first sharks quickly became their apex predators, and as such, were the guardians of the ecosystem and the ones who kept everything in balance. This arrangement has survived the last three great extinction events, though the sixth great extinction, which is happening right now, is threatening to finally bring about their demise.
Each year, more than 100 million sharks are killed, either as bycatch in the massive fish factories trawling for other species or for fisheries searching for the sharks themselves. Now there are more than 470 species of sharks in real danger of extinction. This extreme and extremely unsustainable level of overfishing combined with plastics pollution, which contrary to what we are usually told, is primarily made up from discarded fishing nets and other detritus from the commercial fishing industry and rising ocean temperatures from climate change due in no small part to the animal agriculture industry is ravaging coral reefs across all the great oceans. Quite literally, the only way our oceans can survive is for the world's people to quit eating their creatures.