The longfin squid (Loligo pealeii) were in a tank and magnesium chloride was used to anesthetize them and keep them still, and underwater speakers (the kind used for synchronized swimmers) were used to play the sounds. The results of the research confirm that squid can hear low-frequency sounds between 30 and 500 Hz, but there was no response if the water temperature was less than 8°C.
Unlike land animals, squid do not hear by detecting pressure changes produced by sound waves. Sound detection by the longfin squid (Loligo pealeii) studied with auditory evoked potentials: sensitivity to low-frequency particle motion and not pressure, by T. California's $30-million-a-year squid industry has quadrupled during the past decade and now scientists are using sonar to assess squid stocks.
Dr Mooney said the squid would probably be able to hear waves, the sounds of reefs, and wind above, but would not be able to hear high-frequency sounds such as echo-location signals emitted by toothed whales and dolphins, which are the main predators of the squid.
I would blast the squid with sonar , like we do fetuses, you know, to torture it, and see if it can hear what the chef is cooking, atleast bombard it with frequency, you know to see if it squirms, and then we can control how it swims with frequency. Pure Encapsulations was founded to formulate and manufacture the highest quality line of hypo-allergenic supplements available.

Aran Mooney, a post-doctoral scholar at the Woods Hole Oceanographic Institution (WHOI) in Massachusetts measured the neural response to sounds in squid fitted with electrodes to detect nerve signals from the statocysts, two sac-like sensory organs near the base of the brain in squid. Since our inception, we have been the industry leader in manufacturing excellence and quality control, as well as a pioneer in the production of research-based and clinically relevant formulas. We may experience racing thoughts, or have tense muscles, while also feeling moody and edgy.
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Dr Mooney said the squid basically hears by detecting itself moving with the sound wave, and compared the process to a piece of fruit suspended in jelly.
In response to motions produced by sound the hair cells touch the statolith and generate signals that are sent to the brain.
Note that it has to be precisely the right size, weight and composition to trigger the proper responses in the hair cells.

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The hair cells in the squid statocysts are analogous to the hair cells in the cochlear in human ears, which convert vibrations in the air to signals that are then sent to the brain. A whale is so big and moves so fast compared to the squid, that they have no use of hearing it's coming.
Then you have some people (other articles) that bellow on about the article not having enough specifics, this and that.
But hearing waves, the wind and the flow of water is beneficial in finding places to feed, reproduce, etc.

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