New fishway technology to get fish up and over those dam walls

A view of Manly Dam at Sydney’s Northern Beaches. Credit: UNSW Engineers and scientists at UNSW Sydney have come up with an ingenious way to get fish past dam walls, weirs and other barriers blocking their migration in Australian rivers. The so-called tube fishway is a low-cost and low-energy installation that works by pumping fish […]

Why do bats fly into walls? — ScienceDaily

Bats excel in acoustic perception and detect objects as tiny as mosquitoes using sound waves. Echolocation permits them to calculate the three-dimensional location of both small and large objects, perceiving their shape, size and texture. To this end, a bat’s brain processes various acoustic dimensions from the echoes returning from the object such as frequency, […]

Tube fishway technology will get fish up and over those dam walls

Credit: University of New South Wales Engineers and scientists at UNSW Sydney have come up with an ingenious way to get fish past dam walls, weirs and other barriers blocking their migration in Australian rivers. The so-called tube fishway is a low-cost and low-energy installation that works by pumping fish at high velocity—protected by a […]