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Ikejime (活け締め) or ikijime (活き締め) is a method of killing fish that maintains the quality of its meat. [1] The technique originated in Japan, but is now in widespread use. It involves the insertion of a spike quickly and directly into the hindbrain, usually located slightly behind and above the eye, thereby causing immediate brain ...
Fishing techniques are methods for catching fish. The term may also be applied to methods for catching other aquatic animals such as molluscs (shellfish, squid, octopus) and edible marine invertebrates. Fishing techniques include hand-gathering, spearfishing, netting, angling and trapping.
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ROV at work in an underwater oil and gas field. The ROV is using a torque wrench to adjust a valve on a subsea structure.. A remotely operated underwater vehicle (ROUV) [citation needed] or remotely operated vehicle (ROV) is a free-swimming submersible craft used to perform underwater observation, inspection and physical tasks such as valve operations, hydraulic functions and other general ...
In the 4th century BC the mathematician Archytas of Tarentum postulated a mechanical bird he called "The Pigeon", which was propelled by steam. [13] Taking up the earlier reference in Homer's Iliad, Aristotle speculated in his Politics (ca. 322 BC, book 1, part 4) that automata could someday bring about human equality by making possible the abolition of slavery:
A generally hardy fish, resembles the orchid dottyback, in that the body is a solid purple (sometimes pink), but is missing the black line/marking through the eye characteristic of orchids. This fish semi-aggressive in a home aquarium. 6 cm (2.4 in) Twolined dottyback: Pseudochromis bitaeniatus: May eat shrimps [49]: 101 6.9 cm (2.7 in)
Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture , which is the controlled cultivation and harvesting of aquatic animals such as fish, crustaceans , molluscs and so on, in natural or pseudo-natural environments.