sonar
The modern tools includes several forms of sonar(detection by sound reflection).
Sonar
A device commonly used to locate objects underwater is a sonar system, such as a side-scan sonar or a multibeam sonar. These devices emit sound waves into the water and then receive the echoes bouncing back from objects underwater, creating a detailed image of the seafloor or any objects present.
Dolphins use echolocation to navigate and communicate in their underwater environment because it helps them locate objects, find food, and communicate with other dolphins by sending out sound waves that bounce off objects and return to them, providing information about their surroundings.
They use a Sonar system.
The abbreviation SONAR stands for Sound Navigation and Ranging. It is a technique that uses sound waves to detect and locate objects underwater, similar to how bats use echolocation.
Sonar technology uses the reflection of sound waves to detect objects underwater. By emitting sound waves and measuring the time it takes for them to bounce back, sonar systems can create images of underwater environments and locate objects like submarines or fish.
an instrument that use echolocation to locate objects
SONAR
Sonar (Sound Navigation and Ranging) is used primarily in maritime applications to detect and locate objects underwater, such as submarines, shipwrecks, and marine life. It works by emitting sound waves that bounce off objects and return to the source, allowing for the mapping of underwater topography and assessing the depth of water bodies. Additionally, sonar technology is employed in fishing to locate schools of fish and in underwater research for studying ecosystems. In recent years, advancements have also led to its use in autonomous vehicles for navigation and obstacle avoidance.
Sonar uses echoes to locate objects by bouncing sound waves off them and detecting the echoes.
Something called echo-location