In California, invented an elegant way to catch and preserve deep-sea fish

<pre>In California, invented an elegant way to catch and preserve deep-sea fish

The problem of exploring the living world in the so-called twilight zone of the ocean, at depths of 50 to 200 m, is that the creatures living there are adapted to life at a pressure much more atmospheric. Scientists have long been forced to pull to the surface only corpses deformed from pressure drops, but the only alternative was previously only cumbersome panic-chamber traps in which fish survived – but it was difficult to study. And here at the California Academy of Sciences presented an elegant solution to the problem.

The deep-sea fish catching device looks like a transparent container of durable plastic with a reliable cover, in which the mechanism for connecting to a water filter is mounted. Fish at the depth of catch in any convenient way, put in a container, then the diver launches into the filter an air bubble from his aqualung and mounts the filter on the container, sealing it. The air is at the pressure that exists at a particular depth, but as the gas rises, the gas begins to expand, exerting a proportional pressure on the water in the system.

It turns out a simple, self-regulating pressure chamber, which does not need energy sources and provides partial preservation of the habitual fish environment. If you solve the problem of feeding food through a filter with an air bubble, and subsequent cleaning of the waste, the container can serve as an aquarium for a very long time. In extreme cases – to perform the functions of a transportation module for transportation of exotic fish from the catch place to the laboratories on the mainland.

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