The APFA represents the interests and fosters the development of the Australian prawn farming industry. The Association is a key contact for investors, new farmers and firms wishing to do business with the Australian prawn farming sector.
There are about 300 known species of octopus, and they are quite possibly the most intelligent invertebrates. Some species are able to change color at will to blend in with their surroundings when threatened, and some will even change their shape to mimic other animals to save themselves. Other octopuses have shown rudimentary tool use by arranging discarded shells as shelters.
Because octopuses lack a skeleton, they are able to navigate through tight places. But what happens when there isn’t a hole to go through? Apparently, they just have to make one. This video shows an octopus that uses its remarkable flexibility and suctioned tentacles to its advantage when confined inside a jar.
But what about when the situation is reversed and the octopus wants to get inside the jar? Opening jars can even be difficult for humans, but with a meal as an incentive, this octopus decided to give it a try.
This footage demonstrates how Atlantic sailfish (Istiophorus albicans) use their bill to hunt schooling prey (sardines in this case). The first and last vide...
Alice Fistr's insight:
Like swordfish, marlins, and other such flashy billfish, sailfish have long, pointy bills that look like deadly weapons, Musketeer-style. And new research shows that they are! Nobody has ever showed exactly how the fish use their bills: Some say it’s for foraging, others say there are hydrodynamic benefits (like aerodynamic, but in the water). Peter Domenici of Italy's National Research Council in Torregrande, Andrew Wilson of Carleton University and colleagues show the first direct and “unequivocal evidence” that a combination of stealth and swiftness makes the sailfish bill an extremely effective adaption for feeding on schooling prey. The team captured high-speed, high-resolution videos of Atlantic sailfish (Istiophorus albicans) -- named such for their long, prominent dorsal fin -- brandishing their bill and injuring their prey in open water in the Yucatan Channel, Mexico.
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