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Batoid gill slits lie under the pectoral fins on the underside, whereas a shark's are on the sides of the head. Most batoids have a flat, disk-like body, with the exception of the guitarfishes and sawfishes, while most sharks have a spindle-shaped body. Many species of batoid have developed their pectoral fins into broad flat wing-like appendages.
Rajiformes / ˈ r æ dʒ ɪ f ɔːr m iː z / is one of the four orders in the clade Batomorphi, often referred to as the superorder Batoidea, flattened cartilaginous fishes related to sharks. [2] Rajiforms are distinguished by the presence of greatly enlarged pectoral fins , which reach as far forward as the sides of the head, with a generally ...
Batoids are a superorder of cartilaginous fish consisting of skates, rays and other fish all characterized by dorsoventrally flattened bodies and large pectoral fins fused to the head. This distinctive morphology has resulted in several unique forms of locomotion. Most Batoids exhibit median paired fin swimming, utilizing their enlarged ...
Dates: July 23–29 Time: 8 p.m. ET TV Channel: Discovery Channel Streaming: Discovery+, Max When is Shark Week this year? 2023 Shark Week is set to run from Sunday, July 23 through Saturday, July 29.
Shark Week is back — and fin-tastic programming is on the horizon. This year's annual Discovery event "promises to be an unforgettable and electrifying experience," according to the network's ...
Dailymotion is a French online video sharing platform owned by Canal+. Prior to 2024, the company was owned by Vivendi . [ 2 ] North American launch partners included Vice Media , Bloomberg , and Hearst Digital Media . [ 3 ]
The shark hits the crocodile with the bump-and-bite technique. Accustomed to defending himself against rivals, the crocodile bites the shark's tail, but cannot get a good grip. The shark swims off and makes a wide turn for a full-on assault; all of a sudden, the crocodile gets the first bite on her right pectoral fin.
These are also often referred to as "sharks" in reference to their similar anatomy and ecology to modern sharks. The name Elasmobranchii comes from the Ancient Greek words elasmo- ("plate") and bránchia ("gill"), referring to the broad, flattened gills which are characteristic of these fishes.