Blue scalver [20], blue shark [21] (Prionace Glauca) - a grade of cartoon fish from the Family Family (Carcharhinidae), the only representative of prionace type. In the older ichthyological literature, gray shark names were also referred to [22] or LUDOJad [22]. It lives in deep ocean water temperatures and tropical zones. However, he prefers cooler water. It is known for its long migration, among others From New England to South America. Although drugs slims, it can move with a significant speed.
