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Demersal fish, also known as groundfish, live and feed on or near the bottom of seas or lakes (the demersal zone). [ 1 ] They occupy the sea floors and lake beds, which usually consist of mud, sand, gravel or rocks. [ 1 ] In coastal waters, they are found on or near the continental shelf, and in deep waters, they are found on or near the ...
A coracle is a small, rounded, [1] lightweight boat of the sort traditionally used in Wales, and also in parts of the western parts of Ireland, particularly the River Boyne, [2] and in Scotland, particularly the River Spey. The word is also used for similar boats found in India, Vietnam, Iraq, and Tibet. [3]
Pool-and-weir fish ladder at Bonneville Dam on the Columbia River Drone video of a fish way in Estonia, on the river Jägala FERC Fish Ladder Safety Sign. A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon, is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as ...
A cross sea (also referred to as a squared sea or square waves[a]) is a sea state of wind-generated ocean waves that form nonparallel wave systems. Cross seas have a large amount of directional spreading. [1] This may occur when water waves from one weather system continue despite a shift in wind. Waves generated by the new wind run at an angle ...
Miraculous catch of 153 fish fresco in the Spoleto Cathedral, Italy (second miracle) According to John 21:11. Simon Peter climbed back into the boat and dragged the net ashore. It was full of 153 large fish, but even with so many the net was not torn. This has become known popularly as the "153 fish" miracle.
Reed boats and rafts, along with dugout canoes and other rafts, are among the oldest known types of boats. Often used as traditional fishing boats, they are still used in a few places around the world, though they have generally been replaced with planked boats. Reed boats can be distinguished from reed rafts, since reed boats are usually ...
Underwater diving. Underwater diving, as a human activity, is the practice of descending below the water's surface to interact with the environment. It is also often referred to as diving, an ambiguous term with several possible meanings, depending on context. Immersion in water and exposure to high ambient pressure have physiological effects ...
Bikini Atoll (/ ˈ b ɪ k ɪ ˌ n iː / or / b ɪ ˈ k iː n i /; Marshallese: Pikinni, [pʲiɡinnʲi], lit. ' coconut place '), [2] known as Eschscholtz Atoll between the 19th century and 1946, [3] is a coral reef in the Marshall Islands consisting of 23 islands surrounding a 229.4-square-mile (594.1 km 2) central lagoon.