Marine biologists have been recording the "signature" whistles of captive dolphins for decades but have never been sure of their function. However a new study suggests that these personalised calls are in fact the the cetacean equivalent of shaking hands and trading business cards.
Australia's Great Barrier Reef is the largest natural coral formation on Earth and you'll soon be able to see it in all its glory—from your desk.
No, this photo hasn't been 'shopped. You are looking at a specimen from a barely-known and even-more-rarely-seen group of "Supergiant" amphipods—crustaceans that grow twenty times the size of their relatives and can measure a foot or more in length.
Dragging a body any distance is tough enough on land, much less while swimming. And the faster you land that person, the more likely you are to resuscitate him. Unfortunately, most conventional life-saving equipment is either slow moving, like kick-boards, or slow launching, like wave-runners. Hence, the Asap Water Rescue Craft.
