Latest Sonar Stories
CLEARWATER, Fla., Jan.
More than 1,000 species of echolocating bats exist, compared to just 80 species of nocturnal non-echolocating birds. It seems that normal vision works in tandem with echolocation to give bats an evolutionary edge, however, no one knows exactly how.
New research shows the Pallas long-tongued bat is a very stealthy predator when it comes to catching insects. This goes against the earlier belief the bat eats insects when they pass by.
Between San Francisco and the Mexican border, US nautical charts have shown seven "chemical munitions dumping areas" along the Pacific Coast since World War II. Little to no information is available, however, about the amount, location or nature of the materials dumped at most of these sites.
Newly discovered evidence that killer whales can hunt marine mammals during the nighttime has led scientists to suggest that the creatures can use their hearing to help locate prey.
What could a 50 ton whale and a one gram bat have in common? They share a success story - both have developed the ability to use echolocation, a type of biological sonar, for hunting.
An independent scientific review panel has concluded that the mass stranding of approximately 100 melon-headed whales in the Loza Lagoon system in northwest Madagascar in 2008 was primarily triggered by acoustic stimuli, more specifically, a multi-beam echosounder system operated by a survey vessel contracted by ExxonMobil Exploration and Production (Northern Madagascar) Limited.
Convergent evolution – the evolution of similar traits in drastically different types of creatures – is widespread not just at the physical level but also at the genetic level, according to new research published in this week’s edition of the journal Nature.
- In medieval musical notation, a sign or neume denoting a shake or trill.