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A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet, and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [ 1] The handle lies flat in alignment with the ...
Bait ball. A school of bluefin trevally working a school of anchovies which may compact into a spherical bait ball if they are sufficiently threatened. A bait ball, or baitball, occurs when small fish swarm in a tightly packed spherical formation about a common centre. [1] It is a last-ditch defensive measure adopted by small schooling fish ...
A spiral valve or scroll valve is the corkscrew-shaped lower portion of the intestine of some sharks, Acipenseriformes (sturgeon and paddlefish), rays, skates, bichirs, Lepisosteiformes (gars), and lungfishes. A modification of the ileum, the spiral valve is internally twisted or coiled to increase the surface area of the intestine which ...
Yahoo News Photo Staff. August 30, 2024 at 12:39 PM. Tons of dead fish fill a river near Volos, Greece, Aug. 29. (Vaggelis Kousioras/AP) (AP) A mass cleanup effort is underway in Greece after more ...
The video is only 45 seconds long, but it's total cuteness overload. The zoo froze large disks of ice and put them into the bobcats' pond. Watch on as they try to figure out how to grab it with ...
"The whole sea and the whole port all around was full of dead fish." A drone view shows hundreds of thousands of dead fish in a stream, near the port of Volos, Greece, August 30, 2024. Flooding ...
A fish can have up to three dorsal fins. The dorsal fins serve to protect the fish against rolling, and assist it in sudden turns and stops. The bones that support the dorsal fin are called pterygiophores. There are two to three of them: " proximal " (axonosts), "middle" (baseosts), and " distal ".
The method KAR Photography caught on camera was only one of them. The method shown in the clip involves the bears sitting and waiting for the salmon to swim to them. Then, when they feel a fish ...