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The dugong (/ ˈ d (j) uː ɡ ɒ ŋ /; Dugong dugon) is a marine mammal.It is one of four living species of the order Sirenia, which also includes three species of manatees.It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow (Hydrodamalis gigas), was hunted to extinction in the 18th century.
The wooden joinery is one of the earliest examples of modern mortise and tenon joints, [3] [4] using precisely cut notches and grooves to allow for a tight fit. This process can be repeated many times, and rise many stories, each layer of dougong joinery providing a broader, and more stable surface area for the beam. Adding multiple sets of ...
Dugong skeleton displayed at Philippine National Museum. Dugongidae's body weight ranges from 217 to 307 kg for juveniles, 334 to 424 kg for subadults, and 435 to 568.5 kg for adults. Oral temperatures for individual dugongs is determined from 24° to 34.2 °C. Heart rate readings are from 40 to 96 bpm and vary between individual dugongs.
A fossil reveals how a now-extinct species of dugong was swimming in the sea about 15 million years ago when it was preyed upon by a crocodile and a tiger shark.
Dugongs generally gather in groups of less than a dozen individuals for one to two days. Since they congregate in turbid waters, little is known about their reproductive behavior. The males are often seen with scars, and the tusks on dugongs grow in first for males, suggesting they are important in lekking.
First known use in English was in 1655. [129] [130] Tical an archaic monetary unit of Malay origin, tikal. Adopted into English possibly via Thai or Portuguese, first known use was in 1662. [131] [132] Tokay a large gecko, Gekko gecko, of South and Southeast Asia, having a retractile claw at the tip of each digit.
The Sirena is a mythological sea creature from Filipino culture. Popular in folklore in many regions of the Philippines. In Philippine mythology, the Sirena is a mythological aquatic creature with the head and torso of a human female from waist down and the tail of a fish. [1] The Sirena is an Engkanto –' the Filipino counterpart of English ...
Amazonian manatee Dugong West Indian manatee. Sirenians, along with Proboscidea (elephants), group together with the extinct Desmostylia and likely the extinct Embrithopoda to form the Tethytheria. Tethytheria is thought to have evolved from primitive hoofed mammals ("condylarths") along the shores of the ancient Tethys Ocean.