Danionella cerebrum is a completely transparent fish that's only 10-12 millimeters long. And researchers have just figured out how it can produce sounds that reach 140 dB or higher.
It's National Go Fishing Day, though the fish in today’s story aren’t exactly the ones you’d expect to catch. They’re robotic fish called Charlie and Charlene, and they were developed by the Central Intelligence Agency.
Sometimes it’s not just what you’re communicating, it’s how you communicate it. Pausing for effect can help get your point across. Humans know this, but according to researchers, so do some kinds of fish.
Blueswarm is a school of autonomous robot fish who scan their surroundings and calculate how they can swim together without colliding, like a school of actual fish. And the technology modeled on "implicit coordination" may be useful for lots of other high-tech devices in the future.
Vantablack is a color that's so black it absorbs almost all of the light nearby. There's new research out about a "vantafish" that does almost the same thing to avoid its hungry bioluminescent neighbors.
