Question

Today, most schools of marine fish can be detected by the use of new technology, called—————————.

Answer 1

buoys and water column samplers are used

Answer 2

Answer:

For this purpose water, current samplers can be used. Buoys also are used

Explanation:

Buoys are freely floating or they may even be anchored.

They serve many purposes. They can be also used to generate current by the power of the wave. Also, they may send electromagnetic waves that can be used to detect the depth of the ocean at a particular place.

Water current samplers are used to detect the current or power of the wave. They use various types of sound waves for doing so.