The world’s reefs are dying. Here’s how to save them

13 Apr

The waters off the Hawaiian island of Oahu are visited each winter by migrating marine mammals such as humpback whales. All year round they are home to much smaller animals that form vast reefs: corals. Intricate pink structures stand out amid contortions of vegetable-green ones; dark-striped fish flit among them and turtles hover above. Corals lay down limestone skeletons of different shapes and sizes: branching types like small trees; ground-huggers spreading squat.The colours that lure snorkelling and scuba-driving tourists are produced by single-celled algae that grow symbiotically in corals’ tissue. These use carbon dioxide respired by their host to make oxygen and carbohydrates through photosynthesis, giving corals most of the energy they need to form their skeletons. But this delicate balance is threatened by humans, both in the short term and over the coming years.

Source: The world’s reefs are dying. Here’s how to save them

Leave a comment

Posted by on April 13, 2017 in Uncategorized



Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: