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  2. Circulatory system - Wikipedia

    en.wikipedia.org/wiki/Circulatory_system

    In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).

  3. Hemolymph - Wikipedia

    en.wikipedia.org/wiki/Hemolymph

    Hemolymph fills all of the interior (the hemocoel) of the animal's body and surrounds all cells. It contains hemocyanin, a copper-based protein that turns blue when oxygenated, instead of the iron-based hemoglobin in red blood cells found in vertebrates, giving hemolymph a blue-green color rather than the red color of vertebrate blood. When not ...

  4. Plutomurus ortobalaganensis - Wikipedia

    en.wikipedia.org/wiki/Plutomurus_ortobalaganensis

    Plutomurus ortobalaganensis is the deepest terrestrial animal ever found on Earth, living at 1,980 metres (6,500 ft) below a cave entrance. [1] [2] It is a species of springtail endemic to the Krubera-Voronja cave system in Abkhazia, Georgia. It was discovered in the CAVEX Team expedition of 2010. [3]

  5. Tardigrade - Wikipedia

    en.wikipedia.org/wiki/Tardigrade

    The body cavity is a haemocoel, an open circulatory system, filled with a colourless fluid. The body covering is a cuticle that is replaced when the animal moults; it contains hardened (sclerotised) proteins and chitin but is not calcified. Each leg ends in one or more claws according to the species; in some species, the claws are modified as ...

  6. Marine life - Wikipedia

    en.wikipedia.org/wiki/Marine_life

    Later discoveries of similar animals and the development of new theoretical approaches led to the conclusion that many of the "weird wonders" were evolutionary "aunts" or "cousins" of modern groups [206] —for example that Opabinia was a member of the lobopods, a group which includes the ancestors of the arthropods, and that it may have been ...

  7. Over 500 million years ago, weird complex creatures emerged ...

    www.aol.com/earth-magnetic-field-almost...

    These weird animals barely resembled life today — squashy fans, tubes and doughnuts, and discs such as Dickinsonia, which grew up to 4.6 feet (1.4 meters) in size, and the sluglike Kimberella.

  8. Mollusca - Wikipedia

    en.wikipedia.org/wiki/Mollusca

    The main body cavity is a hemocoel through which blood circulates; as such, their circulatory systems are mainly open. The "generalized" mollusc's feeding system consists of a rasping "tongue", the radula, and a complex digestive system in which exuded mucus and microscopic, muscle-powered "hairs" called cilia play various important roles.

  9. These Are the 14 Most Powerful Mythical Creatures ... - AOL

    www.aol.com/14-most-powerful-mythical-creatures...

    9. Chimera. Origin: Greek The mythological Chimera is a terrifying creature that features a fire-breathing lion’s head attached to a goat’s body, ending in a serpent tail. There are varying ...