Academic Editor: Youssef EL FOUTAYENI
Received |
Accepted |
Published |
January 31, 2021 |
February 15, 2021 |
March 15, 2021 |
Abstract: In this article, we present a biological model for a migratory species of mammals Balaenoptera physalus and the two small pelagic species Sardina pilchardus and Engraulidae. Phocoena is a species of cetacean in the family of Phocoenidae. The size of this population is tending to decline. The reasons for this decline may be due to marine pollution and death by drowning from fishing nets. This species has become very rare in the Mediterranean and has disappeared on other coasts. The two small pelagic species are also widely threatened by sea pollution. The aim purpose of this article is ...