Sharks are rarely seen at almost one in five of the world’s coral reefs, a major study has found. The crash in shark numbers, caused largely by over-fishing, could have dire consequences for corals struggling to survive in a changing climate, researchers have said. Sharks are top predators, playing a key role in marine ecosystems.
An estimated 1.3 billion tonnes of plastic is destined for our environment – both on land and in the ocean – by 2040, unless worldwide action is taken. That’s according to a global model of the scale of the plastic problem over the next 20 years. Dr Costas Velis from the University of Leeds said the
Scientists have new evidence to explain why plastic is dangerous to sea turtles: the animals mistake the scent of plastic for food. Thus, a plastic bag floating in the sea not only looks like a jellyfish snack, but it gives off a similar odour. This “olfactory trap” might help explain why sea turtles are
A new Scottish health project aims to tackle potential harm caused to the environment by pharmaceuticals. An estimated 100 million treatments are prescribed every year in Scotland. After a pill passes through a person’s body, some of its compounds reach rivers, lochs and the sea because waste water plants cannot filter them out. While the
On board Darryl Green’s small fishing boat, just off the island of Praslin in the Seychelles, the water is so clear we can see the seabed. Brightly coloured fish swim around the hull. “You know at my age I’ve seen the fish size decrease dramatically,” the fisherman reminisces. He’s on board his boat with his
Climate change and nutrient pollution are driving the oxygen from our oceans, and threatening many species of fish. That’s the conclusion of the biggest study of its kind, undertaken by conservation group IUCN. While nutrient run-off has been known for decades, researchers say that climate change is making the lack of oxygen worse. Around 700