Photo: Ocean Dead Zones Growing; May Be Linked to Warming



A map created in 2008 shows 415 eutrophic (overly nutrient-rich) and hypoxic coastal systems worldwide—169 documented hypoxic areas (red), 233 areas of concern (yellow), and 13 systems in recovery (green).

A new study has found that the tropical ocean's dead zones are growing in size and intensity as sea temperatures rise, posing risks to many marine organisms and fisheries.

Image courtesy World Resources Institute


EMAIL NEWSLETTER Photos and News of the Week

Get the top photos and news of the week from National Geographic News, plus occasional breaking-news alerts.

See Sample >>
Please enter a valid email address
Privacy Policy
NEWS FEEDS    After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed. After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed.

Get our news delivered directly to your desktop—free.
How to Use XML or RSS

ADVERTISEMENT

NATIONAL GEOGRAPHIC'S PHOTO OF THE DAY

Vote for Your Favorite Green Idea!

Who do you want to see receive $20,000 to put their Earth-saving idea into action? Check out the ten Green Effect finalists, and until July 20 you can vote—up to once a day—for your favorite idea!