Author: Guest Contributor

Climate change is making things even worse. Rising sea levels threaten to impact marine ecosystems, as well as inundate coastlines. Populations of fish are already moving towards the poles, while rising temperatures can also affect reproduction and cause coral bleaching. And carbon dioxide emissions are turning the seas more acidic than they have been for 300 million years, making it harder for shellfish and crustacean to build their shells and possibly making it more difficult for fish to breathe. Protected areas also offer natural defences that help people adapt to the adverse effects of climate change. They reduce the impact…

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