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更新日期：2019-05-31
檔案大小：21M
目前版本：10.05
版本需求：Android 4.2 以上版本
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witness sharks live wallpaper on your android screen. get this live sharks wallpaper free and free shark backgrounds now. sharks are fish more specifically, they are cartilaginous fish, which are fish that have a skeleton made of cartilage, rather than bone. sharks, along with skates and rays, are classified in the class elasmobranchii, which comes from the greek word elasmos (metal plate) and latin word branchus (gill). although their skeletons are made of cartilage, elasmobranchs (and therefore, sharks) are considered to be vertebrates in the phylum chordata, the same phylum in which humans are classified. sharks have some key features that can be used to identify species. starting at the front of their body, sharks have a snout, which has wide variation in size and shape and may be a way to identify species (think of the difference in the snouts of a white shark and a hammerhead shark, as an example). this is indeed predator and great white shark app. on their top (dorsal) size, sharks have a dorsal fin (which may have a spine in front of it) and a second dorsal fin located nearer their tail. their tail has two lobes, an upper and a lower, and there may be a dramatic difference in size between the upper lobe and lower lobe (thresher sharks have a long, whip-like upper lobe).
terrifying sharks have gills that they use to breathe, and their gills are open to the ocean, with 5-7 gill slits on each side. this is unlike gills in bony fish, which have a bony covering. behind their gills, they have a pectoral fin on each side. be careful of its shark jaws. on their ventral (bottom) side, they have a fin and may have an fin closer to their tail. a shark's body is covered with tough placoid scales, and gender may be distinguished by the presence or absence of claspers near the fin males have claspers that are used in mate, while females don't. retina wallpapers. there are over 400 species of sharks, and they have a wide range in size, coloration and behavior. the largest shark is the massive, relatively passive 60-foot long whale shark and the smallest is the lanternshark (etmopterus perryi) which is about 6-8 inches long. as aquatic animals sharks can be found all over the world, in both cold and warm waters. some, like the blue shark, spend most of their time roaming the open ocean eating plankton, while others, like the bull shark inhabit warmer, murky coastal waters. feel this scary wallpapers on your phone.
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