That right there is sonar.
In the context of the NOAA, a "bloop" refers to a type of mysterious ultra-low-frequency sound originally recorded in the Pacific Ocean. It has been attributed to the sound of ice breaking up or calving off of a glacier.
strike or bloop
The "Bloop" was a powerful underwater sound detected by the NOAA in 1997, which was initially thought to be of biological origin. However, further analysis suggested that it likely originated from icequakes in the Antarctic region, specifically the breaking of large icebergs. While it sparked much speculation about the existence of giant sea creatures, there is no scientific evidence to support this idea. Thus, the Bloop as a mysterious creature does not exist, but it remains an interesting phenomenon in oceanography.
Bloop, because of the sound it made.
An underwater mp3 player can work with no hassle underwater so long as you do not go beyond 5 meters or 15 feet underwater in which the sound frequency would get messed up.
Why would you need to? If you're writing a story, you don't write things like "bloop" or "splash" - you let the reader imagine those sounds for themselves. Write what is happening to make bubbles, and they'll figure out what it sounds like.
deep deep deep underwater
no its the senate...bloop bloop
He was the Penny's chimpanzee
heat laxer or bloop bloop
Its iron bloop bloop
Sonar measures the distance to underwater objects by sending sound waves into deep water and timing how long it takes for the echoes to return. This technique, known as echo-sounding, helps determine the depth of the water and identify the presence and location of underwater features such as fish, shipwrecks, or the ocean floor. The speed of sound in water is also a critical factor in these measurements.