The Scuttlefish

While the use of chum grows controversial on shark tours, a few great white tour operators are seeking out more creative methods by which to lure the behemoths and music has become the most influential choice.

Matt Waller of Adventure Bay Charters claims that he’s found the perfect tunes: the high-decibel, low-frequency music of rock and roll band AC/DC, and although it might be fun to entertain the idea of the song titles bringing the toothy critters in (such as “If You Want Blood”),  he believes it to be the specific range of frequency that does the trick.

“We know the AC/DC music works best by trial-and-error, and we are doing more research to see what works best with different species of sharks…”

However, Waller is not close-minded, and in a recent press release with Adelaide Now, he welcomed guests to bring other music in order to “see if the Great White has similar taste in rock-and-roll, pop or hip-hop. Any genre is welcome, if the sharks don’t like it, we will put AC/DC back on, which to date is their favorite!”

*via petethomasoutdoors, image via hermanusbackpackers*

Researchers from Sweden and the US have concluded that dolphins can simultaneously send out two sonar beams, each at different frequencies that can also be sent in different directions.

The function of using dual frequencies is probably in order to locate objects more precisely, scientists say; but it’s quite a remarkable find as researchers have been studying dolphins and echolocation, or the ability to locate objects with sound, since the 1960s.

Beyond that of bats, for example, dolphin echolocation is extremely sophisticated and has millions of years of evolution behind it.  Humans still have a lot to learn from the incredible mammals–both in protecting them from noise disturbance (which can cause them to beach) and in our own technological advances says Josefin Starkhammar, a doctor in Electrical Measurements at Lund University and a Master’s degree in Engineering Physics.

*via sciencedaily, yellowmagpie*

octofrau by El ChAr-Lee – via 2headedsnake

Mermaid Anemone Fish (top left)
Greeting Card Artist: Dorothy P. Lathrop – via allmermaids

(lower right) – No information

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