These animals contain hexagonal plates of calcium salts for support in their mouth; those plates are called tesserae.
These animals contain hexagonal plates of calcium salts for support in their mouth; those plates are called tesserae. These animals contain electroreceptor organs called the Ampullae of Lorenzini, allowing them to have the greatest electrical sensitivity of any animal. They use a large liver filled with an oil that contains squalene to keep afloat, since they do not have a (*) swim bladder. They lay eggs covered with a leathery case called a mermaid's purse. These animals have a keen sense of smell, and replace over 30,000 teeth during their lifetime. For 10 points, name these cartilaginous fish that come in tiger, hammerhead, and great white varieties.
These animals contain hexagonal plates of calcium salts for support in their mouth; those plates are called tesserae.
{Shark}s [or {Selachimorpha}; accept specific types of sharks]