Narwhals are a species of toothed whale that are most closely related to the beluga whale. The males have evolved an extra long left canine tooth that can grow up to 2.7 meters or 9 feet long and bursts through the upper lip and protrude from the head like the horn of a unicorn. In a research published in PLOS One, it was revealed that narwhals have the most directional sonar of any species on Earth.
When the environment that surrounds them is too "noisy," bats shift their gears and adapt by using their secondary sense: echolocation.
A new research says that bats also waggle their heads back and forth to listen for coming insects. The study claimed that by waggling their heads, bats can locate their prey, especially if the movements of their prey are becoming irregular.
Tiger moths produce ultrasound signals that can advertise their toxicity or jam the sonar used by bats for echolocation.
A critically endangered population of killer whales in the Pacific Northwest may be encountering more noise pollution than in the past. A recent study suggests large passing oil tankers emit sounds at frequencies killer whales use to communicate and echolocate. Ultimately, researchers say, this could impede their ability to find food they need to survive.
When darkness falls, bats emerge from their cave dwellings to forage, relying on the echos of their own calls to locate prey. A new study suggests bats avoid noise overlap in large groups by increasing the volume, duration and repetition rate of their own unique signals.
Male crickets emit a high-frequency chirp to startle potential female mates into revealing their location. This, researchers say, likely evolved from males impersonating predatory bats.
Dolphins emit sound waves to get a feel for their underwater surroundings. Researchers have reconstructed images that they say show how dolphins "see" nearby objects by recording these sounds. Those images have been popular online, but other scientists have not vetted the research.
Usually it's assumed that bats' impressive echolocating -- finding their way through darkness via echoes bounced off objects -- is done in a certain way. But a new study says it's actually a far simpler maneuver.
MIT researchers have figured out how seals use their unique whiskers to track prey and navigate.
Barbastelle bats observed in central France have adapted to hunt eared moths more efficiently. Using two different, weak signals, they are able to sneak up on their prey while keeping track of their environment.
Anyone familiar with bats knows that the term "blind as a bad" actually translates to "not blind at all." Not only do these animals have perfectly functioning eyes, but they also have the help of sonar in failing light. Now researchers have found a way to show what bats "see" with that echolocation, and the results have revealed some impressive findings.
Dolphins have more than one neural pathway for using sound and creating mental images, researchers say.
Fruit bats, unlike their echolocating brethren, have to use wing clicks to find their way, a new study says.