Latest Sonar Stories
In December, the National Marine Fisheries Service authorized Navy sonar training exercises off the coasts of Hawaii and California through 2018. This authorization came despite admittance by the Navy that the work will kill up to 155 marine mammals and harm numerous others.
As male túngara frogs call from their puddles to attract females, they create ripples that spread across the water. According to researchers, these ripples are used by other male frogs to assess their competition – and also by bats looking for their next meal.
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.
- Large; stout; burly.