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!
Category: Underwater Communication
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…
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.
Information only when needed
If this approach was employed in the Underwater Internet of Things – establishing communication channels predicated on unique frequency-shift sequences specific to the particular communication channels, it might go far in allaying our concerns about turning the entire ocean into a digital-communications mosh pit.
Underwater Internet of Things starting to sneak up on us.
Under the auspices of the International Standards Organization (ISO), we’re working on the “Underwater Internet of Things” (UIoT). Our task is to make sure that it wreaks the least amount of havoc on marine life.
Talking to whales
Is AI really up to speaking whale? “Artificial Intelligence” is is the shiny new toy that synthesizes gargantuan amounts of data and spits out the most likely condensation. For it to work, one needs to start with understanding…
Where ocean noise pollution and ocean temperature intersect.
The question remains as to whether the fossil fueled industrial denial of our global climate catastrophe will abate, or if they will change their tune to “it’s too late to do anything about…”
Making the ocean even smarter II
Most underwater communication signals will likely be acoustic, and likely be in the 8kHz – 25kHz range; overlapping human auditory range, and smack-dab in the sweet spot of marine mammal hearing range (as well as some fishes, and likely some marine invertebrates…).
