Fabrication de support a boutures?

Blog de Plongée Sous Marine - Récits et Photos de Voyages de Plongée Reef Ball Foundation: Getting Grants For Your Project Coral reefs: life in the balance | Environment | The Observer A coral reef is a busy neighbourhood. In warm, shallow, tropical waters, clownfish mill among sea anemones; sponges and seaweeds jostle against each other; crabs and snapping shrimps lurk defensively amid the knobbly branches.It's a cornucopia of life. "About a third of all marine diversity sits in coral reefs," says Professor Jörg Wiedenmann, head of the Coral Reef Laboratory at the University of Southampton. At the heart of the reef's ecosystem are coral polyps – soft-bodied animals related to sea anemones. As larvae, they attach themselves to robust underwater structures such as rocks or even sunken wrecks, cementing themselves to the surface by secreting calcium carbonate. Their principle: divide and rule. But the reef is a cut-throat environment, rife with predators and prey. Cutting one of the most crucial deals is the coral itself. Known as coral bleaching, it's a dramatic separation that leaves a ghost-town of devastation.