(Building) a trademark name for plasterboard or drywall, composed of gypsum enclosed by heavy sheets of paper and used for constructing interior walls and ceilings. (ËÊitËrÉk) Trademark. a brand name for a plasterboard of gypsum between paper.
If we go by the official list of dangerous sharks (e.g. from the International Shark Attack File ISAF, an institution which analyzes and collects reports on shark attacks) the white shark (Carcharodon carcharias) ranks first, followed by the tiger shark (Galeocerdo cuvier) and the bull shark (Carcharhinus leucas).
Because of these characteristics, many experts consider bull sharks to be the most dangerous sharks in the world. Historically, they are joined by their more famous cousins, great whites and tiger sharks, as the three species most likely to attack humans. Bull sharks get their name from their short, blunt snout, as well as their pugnacious disposition and a tendency to head-butt their prey before attacking. They are medium-size sharks, with thick, stout bodies and long pectoral fins. They are gray on top and white below, and the fins have dark tips, particularly on young bull sharks. They are found cruising the shallow, warm waters of all the worldâs oceans. Fast, agile predators, they will eat almost anything they see, including fish, dolphins, and even other sharks.