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The etymology of the word shark is uncertain. The most likely etymology states that the original sense of the word was that of "predator, one who preys on others" from the Dutch schurk, meaning 'villain, scoundrel' (cf. card shark, loan shark, etc.), which was later applied to the fish due to its predatory behaviour. [13]
Although they have ears, many fish may not hear very well. Most fish have sensitive receptors that form the lateral line system, which detects gentle currents and vibrations, and senses the motion of nearby fish and prey. [1] Sharks can sense frequencies in the range of 25 to 50 Hz through their lateral line. [2]
Lateral line – sense organ that detects movement and vibration in the surrounding water; Shark cartilage – material that a sharks' skeleton is composed of; Shark teeth; Spiracle – pumps water across gills; Clasper – the anatomical structure that male sharks use for mating; Fish anatomy – generic description of fish anatomy
Ampullae of Lorenzini (sg.: ampulla) are electroreceptors, sense organs able to detect electric fields. They form a network of mucus -filled pores in the skin of cartilaginous fish ( sharks , rays , and chimaeras ) and of basal bony fishes such as reedfish , [ 1 ] sturgeon , [ 2 ] and lungfish . [ 1 ]
The shark is large and active and has a large head but small eyes and snout. [5] The mouth is broad and prominent. [10] The shark has one dorsal fin at the back of the body that spans from the insertion to the tops of the pelvic fins. [5] The mottled grey and white body is covered in a variable number of small black spots. [10]
The basking shark (Cetorhinus maximus) is the second-largest living shark and fish, after the whale shark. [4] It is one of three plankton-eating shark species, along with the whale shark and megamouth shark. Typically, basking sharks reach 7.9 m (26 ft) in length.
"The shark takes off because clearly, that's not what the shark was interested in. If you look at maybe something like a six-foot bull shark, just by the sheer size, it's going to do a lot more ...
Kinesthetic sense Pain; Amoeba: n/a n/a n/a n/a n/a n/a n/a n/a n/a Bat: poor visual acuity, none of them is blind. It has even been discovered that some species are able to detect ultraviolet light. [1] Bat calls range from about 12,000 Hz - 160,000 Hz. n/a They also have a high quality sense of smell. n/a n/a n/a n/a n/a Dog