it appears that there were a number of these tetrapods who were not entirely enthused by the reliable forces of gravity, so back 55-64 million years ago they began migrating back into the water. These became the cetaceans…
World Whale Day 2025!
Fish (and whale) ears 4
Marine animal bodies are close to the density of water, so unlike airborne sound that bounces off the bodies of terrestrial animals, water-borne sound can pass right through – opening up the question; do marine animals have ways of hearing through their bodies?
Fish Ears 3 – Acoustical Daylight
Needlefish at night – photo Umeed Mistry Our last newsletter was an overview of the phenomenology of the sound perception of fishes in the context of lab-produced auditory threshold testing – revealing that measuring the acoustical sensitivities of fishes in…
Fish Ears 2 – Fishes hear where they are…
Fishes can “hear” their surroundings though their bodies – sensing where they are. Are they “aware” of this? Perhaps no more than we are “aware” of seeing through our eyes.
Fish Ears 1 – What do fishes really hear?
Most of the auditory threshold research on fishes has assumed that they use sound much as mammals do. We found this assumption to be somewhat out in the weeds…
Diving into the World of Orcas with Todd Thimios
A close encounter with a pod of wild orcas is a dream for many divers. As the ocean’s apex predator, orcas are equally as graceful as they are powerful.
What comes next?
s I’ve previously indicated, I’ve been sparing my nerves by not reacting seriously until I “see the whites of their eyes,” – and I have to take in with amusement some of the conflicts and narratives that are being revealed.
Data Processing, Featured, Industrial pollution, Metrics, Noise Pollution, Underwater Communication, Underwater Internet of Things
Another Angle on Standards
Standard metrics and vocabulary assures us that scientific and technical research is clearly understood, and repeatable. But it also can confer commercial advantages if the “Standard” conforms to already-developed, proprietary technologies.
