A couple of months ago, we wrote about a remarkable online “fish doorbell” or visdeurbel that allows spawning fish to swim through the canals of Utrecht in the Netherlands unobstructed by the Weerdsluis lock. The system is comprised of an internet-connected underwater camera … [Read more...] about Update: Holland’s fish doorbell is a worldwide hit!
Fish
Dutch citizens are using a “doorbell” to help fish pass this canal gate
Every year, thousands of spawning fish swim through the canals of Utrecht in the Netherlands. When they reach the Weerdsluis lock though, they often cannot travel further because the barrier — which acts as a dam — is rarely open. A new initiative, however, is now allowing … [Read more...] about Dutch citizens are using a “doorbell” to help fish pass this canal gate
Natural antifreeze compounds produced by fish inspire road salt alternative
Salt is a primary tool used by cities to keep roads safe during snowy weather, but while the salt helps melt snow and improve traction, it also has detrimental effects on the environment and infrastructure. Road salt is often a combination of regular salt and additives like … [Read more...] about Natural antifreeze compounds produced by fish inspire road salt alternative
Listening to salmon could make farmed fishing less wasteful
Farmed salmon make up somewhere between 60 and 70 percent of all the salmon humans eat. Those salmon need to be fed, but it can be tricky for growers to understand when to feed them and how much food to provide. After all, salmon do not behave like dogs, who will simply saunter … [Read more...] about Listening to salmon could make farmed fishing less wasteful
Playing underwater ‘music’ attracts young fish to degraded coral reefs
Whether it’s the “crackle of snapping shrimp” or the swishing sounds of fish passing by, a healthy coral reef tends to be quite a noisy place. These are sounds that young fish are attracted to once they have hatched and spent their larval stage in the open ocean. The problem is … [Read more...] about Playing underwater ‘music’ attracts young fish to degraded coral reefs