They have (inner) ears.
A fishing boat using sonar to locate fish is employing reflection. The technique that uses sound propagation to detect objects under the water.
lateral line is a line on the fish body that function to detect vibrations in water
it is used my SONAR. When something is underwater. I.E fish. The sound sends a frrequency to the fish, and it bounces back off the fish back to the SONAR. and thats how people know where to go and how to find stuff underwater
A sonar device can detect objects underwater by emitting sound waves and analyzing the echoes that bounce back. It can be used to find underwater features such as fish, submarines, shipwrecks, or the seafloor.
Whales and Dolphins are born under water and aren't fish.
In water.
you can be like a fish or you are maybe a fish if u can breath under the water.And you can use the binoculars for breathing under the water.
They use their gills to breathe under water.
fish can live under icy conditions because ice couldn't cover whole water its only on the surface area so fish can get oxygen under water
water.
fish
fish can