The Three-lobed tail of the coelacanth is merely one of the fish's distinctive features. Last October, scuba divers discovered a new group of these rare fish once thought to have been extinct for millions of years in a marine reserve off the coast of South Africa. Astronomers may finally have glimpsed a key step in the construction of a planet.
Dolphins apparently recognize their own reflections.
The recent discovery of coelacanths off the northeastern coast of South Africa was the first sighting of the rare fish in that country since the first living coelacanth, a type of fish thought to have been extinct for millions of years, was caught there in late 1938. In an odd twist, material that is so extremely yielding that it is said to have negative stiffness will make already stiff materials even stiffer when it's blended into them. All rights reserved. Subscribe to Science News . Copyright Clearance Center Browse a Science News photo collection.