Characteristics of Dolphins

Features of dolphins Most small whale whales are known as dolphins. "Dolphins are about 50 species, cetaceans and mammals, and mammals of the Nymphalidae family" (Internet 1). Most dolphins are about 6 feet long and men are 4-8 inches longer than females. The longest dolphins, bottlenose dolphins are over 9 feet in length and weigh up to 440 pounds. The smallest dolphin species is a buffalo found in the Amazon.

In a recent paper (http://www.sciencedirect.com/science/article/pii/S2405722316301177), Russian scientists explain the features of exchange between two dolphins, this exchange is human It has obvious meaning in voice communication. Similarities Dolphins use various sounds that look like words to "talk" in turn, and concatenate these "words" to something like sentences. The author seems to be convinced that dolphins have proven that they are using that language, but they can not decipher the meaning of these so-called words and sentences. Despite decades of effort and research, I can not talk to dolphins.

In Laguna in the southern part of Brazil, people and band dolphins have been caught for generations. Dolphins swam to the beach and brought the fish to the fisherman. Before throwing a fishing net, these people are waiting for a signal from dolphins - unique diving. Dolphins are responsible for starting grazing and transmitting important signals, but some people do. People must know which dolphins graze the fish, and if you do not pay close attention to the signal, fishing will fail. Both groups of mammals must learn the skills they need. In humans, these are passed from father to son, in dolphins from mother to calves. In this case, how many species are there?