Sharks could be killed off by climate change after 'catastrophic decrease' in hatchings
![Sharks could be killed off by climate change after 'catastrophic decrease' in hatchings](https://i2-prod.dailystar.co.uk/incoming/article33163231.ece/ALTERNATES/s615/0_MAINSOCIAL.jpg)
Scientists say ocean warming and acidification are caused by greater concentrations of carbon dioxide dissolving into marine environments, resulting in rising water temperatures and falling pH levels