More dead zones in the ocean discovered

by Owen James

Earth is often called ‘The Blue Planet’. As most fish fanatics know, that’s because 70 per cent of the surface is covered with water. But it could soon be because it resembles a strangled man going blue in the face.

Dead zones are areas of the ocean low on oxygen. Some are natural, but many more are caused by pollution-fed algae. And a new report has found that they’re spreading:

New low-oxygen areas have been reported in Samish Bay of Puget Sound, Yaquina Bay in Oregon, prawn culture ponds in Taiwan, the San Martin River in northern Spain and some fjords in Norway.

Interestingly, some areas went dead in New Zealand after salmon cages were introduced, but recovered when they were removed.

Read more on the dead zones, if you feel like getting depressed.

Check out Katy's Tropical Fish Guide for more aquarium info.

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