Corals

    A dive in paradise

    A dive in paradise

    Biomass and biodiversity. Two rather dull and stiff words. But words often associated with Raja Ampat. Raja Ampat is situated west of Papua Guinea, right in the heart of what's known as the "Coral Triangle."

    Salem Express – an example of nature’s resilience

    Salem Express – an example of nature’s resilience

    On December 14th, 1991, the passenger ship Salem Express sank when a storm hit the Red Sea. The shipwreck was a human tragedy. Among the passengers were hundreds of pilgrims who were on their way home from Mecca.

    Even the sea has seasons

    Even the sea has seasons

    It is late winter. In Trondheimsfjorden in Norway, the corals and all of their inhabitants are waiting for the return of light and warmth.The sea, just like on land, has seasons that affect behaviors and growth.

    Efforts underway to save Sweden’s last coral reef

    Efforts underway to save Sweden’s last coral reef

    In the laboratory's aquariums, lush corals glow ghostly white in the dark. But out in the sea, below the surface, there is almost only gravel and dead skeletons left. Here are the scientists who will save Sweden's last coral reef.

    Warmer Seas: Corals are the whistle blowers of the sea

    Warmer Seas: Corals are the whistle blowers of the sea

    The world's coral reefs are in trouble. As the oceans get warmer, corals are stressed and eventually die. Coral scientist Tessa Hempson calls corals the "canary in the coal mine". The little bird that used to be placed far down the mine shafts, because when it died you knew the oxygen in the mine would soon run out. A whistleblower who suffers long before we humans do.

    Coral Reefs in Thailand are Yellowing and Dying

    Coral Reefs in Thailand are Yellowing and Dying

    The calm turquoise waters along Thailand's coast can look idyllic. But beneath the surface lurks a treacherous disease that is spreading and killing vital coral reefs.

    How is the Great Barrier Reef doing?

    How is the Great Barrier Reef doing?

    The Great Barrier Reef is larger than Finland, and it is still bursting with life. But climate change poses several kinds of threats to the future of coral reefs

    Color explosion as barrier reef multiplies

    Color explosion as barrier reef multiplies

    On Tuesday night, researchers found that the corals send sperm and eggs into the Pacific Ocean to multiply. "It's gratifying to see the reef give life," said marine scientist Gareth Phillips