Category: Bioacoustics

Long distance calling!

While there are a number of varied species of baleen whales that are adapted to their particular habitats and natural histories, there are a few things they have in common; they’re all much larger than we are, they all graze…

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The sound of climate disruption

It has been known for quite some time that excessive anthropogenic carbon dioxide is modifying ocean chemistry, increasing acidity, and compromising shell growth in calciferous sea life. The effects of this have been confirmed in sea snails, corals, and oysters,…

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Acoustical Habitats and Aquatic Noise

I’ve just returned last week from the 2016 Aquatic Noise conference (AN2016), a gathering of souls who have taken it upon themselves to examine, poke, prod, regulate, and abuse our common interest in Marine Bioacoustics. This conference happens every few…

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Dolphin Speak

“CymaGlyph” from Cymascope.com

  When we humans think of language it is typically in terms of transferrable meaning – “this sound means this idea or this thing.” This is likely an evolutionary adaptation incorporating our dependence on visuality and the consequences of time…

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We’ve come a long way from the “Silent Seas”

It is amazing how many people in the field of ocean science and conservation credit Jacques Cousteau as the inspiration for their love of the sea. Just when color TV was migrating into the American living room Cousteau was offering…

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What do they really hear?

Earlier this year a paper by Christne Erbe et.al was published in the open source Public Library of Science (PLoS-One) that frames ocean noise exposures in a sensible and informative manner. For various adaptive reasons animals are sensitive to sounds…

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The little things that count (also)

In the early years of the ocean noise discussion there were heated debates about whether or not introduced noise was really harmful to marine life. Our understanding was shallow and the tools blunt. Even when animals washed ashore deafened, dead,…

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Bio-inspired communication signals

Of the many papers presented this week at the Institute of Electronic and Electrical Engineers/Marine Technology Society (IEEE/MTS) Ocean conference two really stood out as possible solutions to the impacts of communication signals on marine mammals. These papers discussed using…

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Shark Week – Sharks have ears too! (2)

In response to our most recent newsletter on shark hearing, bioacoustics elder and fish hearing expert Art Popper contacted us to provide a more accurate pedigree on the understanding of shark hearing. While there was observed evidence of shark hearing…

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What can animals hear?

While catastrophic whale strandings first brought the public’s attention to the ocean noise impacts, a greater noise concern is the impact of the ever increasing “acoustic smog” from human noise sources. This problem is called “masking” – what happens when…

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