Map-like use of Earth’s magnetic field in sharks

This is the first paper that I've seen that comes with a video abstract, This is an awesome idea. All papers should come with videos that explain it in layman's terms.

Totally OT : why do their voices sound so low. It's often the case, when I hear american-english speaking people on the internet, that they lower their voices to very deep tone, almost to the point I can't understand it anymore. In my language (french) this doesn't occur at all.

There is a research paper[0] on how magnetic fields have effects on human brains that are measurable by EEG. This effect seems to have no conscious component though but (my idea) maybe it plays unconsciously into general orientation?<p>[0] <i>&quot;Transduction of the Geomagnetic Field as Evidenced from alpha-Band Activity in the Human Brain&quot;</i>, <a href="https:&#x2F;&#x2F;www.eneuro.org&#x2F;content&#x2F;6&#x2F;2&#x2F;ENEURO.0483-18.2019" rel="nofollow">https:&#x2F;&#x2F;www.eneuro.org&#x2F;content&#x2F;6&#x2F;2&#x2F;ENEURO.0483-18.2019</a>