Hydrophone study shows NZ link for blue whales

Written By Trevor @ Hop Creative

NEW ZEALAND—New Zealand waters provide an important migratory route for the biggest animal to ever exist, the Antarctic blue whale, according to a new study.

Hydrophones, or underwater microphones, anchored at the bottom of the ocean around central New Zealand recorded the whales’ low-frequency calls, which are loud enough to be heard across hundreds of kilometers, to monitor their locations.

Trevor @ Hop Creative http://www.hopcreative.com
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