Sentences with phrase «echolocation about»

The ancestor of whales emerged about 50 million years ago, and the first toothed whales began to use echolocation about 30 million years ago.

Not exact matches

Harbor porpoises are frequently exposed to sounds from shipping vessels that register at around 100 decibels, about as loud as a lawnmower, scientists report February 14 in Proceedings of the Royal Society B. Sounds this loud can cause porpoises to stop echolocation, which they use to catch food.

The rarity of the species makes it difficult to study, but these results could lead to the finding of echolocation across more species within the family and may help to solve ongoing debates about the evolution of echolocation.

But why do many species of porpoises and other small toothed whales emit echolocation sounds at about 130 kHz?

Elizabeth Preston wrote about a blind 13 - year - old boy who has learned to use echolocation, a way of seeing with sound, more commonly associated with animals such as bats and dolphins.

In the first study to assess the effects of shipping vessel noise on porpoises, researchers tagged seven harbor porpoises off the coast of Denmark with sensors that tracked the animals» movement and echolocation usage in response to underwater noise over about 20 hours.

Victor's comment about them having some kind of echolocation like bats was also a nice touch.

And to read about the soprano Pipistrelle bat, and hear it's echolocation call, go here.

They are very fast swimmers, reaching speeds of up to 29 miles per hour, averaging about 100 miles per day, which is one of the reasons these dolphins don't do well in captivity.Dolphins have a unique adaptation called echolocation.

Desiree: The most exciting about Perception is the gameplay that will come out of echolocation and how that will affect how we create a horror game.

Professor Kate Jones spoke about bat echolocation and played sonographs to demonstrate the different ways bats communicate and understand their surroundings.