2014 Global Ocean Health Index
The Global Ocean Health Index calculates an annual global score for ocean health in 221 coastal regions and 15 sectors of the high seas, based on dozens of the best scientific sources available. It monitors pollution, overfishing and the impacts of climate change, among other things. It assigns individual scores to each regions, with scores for factors such as biodiversity, carbon storage, coastal protection, clean waters, natural products and coastal livelihoods and economies.
Earth’s oceans is still ailing although slightly improved, due to conservation and protection measures. However the planet’s waters get a score of “D”, and overall score of 67. Canada’s Prince Edward Island and Australia’s Heart and McDonald Island are the top scorers at 93. Here’s how Nigeria is faring at 57: