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  2. Water vascular system - Wikipedia

    en.wikipedia.org/wiki/Water_vascular_system

    The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. [1] The system is composed of canals connecting numerous tube feet. Echinoderms move by alternately contracting muscles that force water into the tube feet, causing them to ...

  3. Bushing (isolator) - Wikipedia

    en.wikipedia.org/wiki/Bushing_(isolator)

    A rubber bushing may also be described as a flexible mounting or antivibration mounting. These bushings often take the form of an annular cylinder of flexible material inside a metallic casing or outer tube. They might also feature an internal crush tube which protects the bushing from being crushed by the fixings which hold it onto a threaded ...

  4. Recirculating ball - Wikipedia

    en.wikipedia.org/wiki/Recirculating_ball

    Recirculating ball, also known as recirculating ball and nut or worm and sector, is a steering mechanism commonly found in older automobiles, off-road vehicles, and some trucks. Most newer cars use the more economical rack and pinion steering instead, but some upmarket manufacturers (such as BMW and Mercedes-Benz ) held on to the design until ...

  5. Nissan Sentra - Wikipedia

    en.wikipedia.org/wiki/Nissan_Sentra

    Manual and CVT automatic transmissions are available (manual available in ST and ST-L models only). All models feature six airbags, alloy wheels, Bluetooth and cruise control; the ST-L gets added leather gear shift and steering wheel, fog lamps, and a rear spoiler while the Ti adds Xenon headlamps, leather seats, dual-zone climate control ...

  6. Choriaster - Wikipedia

    en.wikipedia.org/wiki/Choriaster

    Choriaster granulatus is a large sea star with a convex body and five short arms. The arms have rounded tips, making it appear "phallic", leading to one of its common names being "the doughboy starfish". Relatively large in comparison with other sea stars, its maximum radius is about 27 centimetres (11 in).

  7. Starfish - Wikipedia

    en.wikipedia.org/wiki/Starfish

    Starfish, such as the ochre sea star (Pisaster ochraceus) and the reef sea star (Stichaster australis), have become widely known as examples of the keystone species concept in ecology. The tropical crown-of-thorns starfish ( Acanthaster planci ) is a voracious predator of coral throughout the Indo-Pacific region, and the Northern Pacific ...

  8. Pentaceraster cumingi - Wikipedia

    en.wikipedia.org/wiki/Pentaceraster_cumingi

    Pentaceraster cumingi, sometimes known as the Panamic cushion star, Cortez starfish or knobby star (a name also used for other species), is a species of starfish in the family Oreasteridae.

  9. Mediaster aequalis - Wikipedia

    en.wikipedia.org/wiki/Mediaster_aequalis

    Mediaster aequalis is a species of sea star in the family Goniasteridae. It is native to the west coast of North America, ranging from Alaska to California. It is found in various habitats including beaches during very low tides, and at depths down to about 500 m (1,600 ft).