Education
In 1957 he entered the natural-geographical faculty of the Crimean Pedagogical Institute. After graduating from the institute in 1962, worked as a head of its agrobiological station. From 1964 he worked as laboratory assistant of Krympedinstituta Department of Zoology. His supervisor was the greatest scholar of helminths of marine mammals, SL Delyamure. In 1965-1968 Yurakhno studied in graduate school. In 1971 he defended his thesis "Helminths of marine mammals, of the Bering and Chukchi Seas." In subsequent years he worked as an assistant, senior teacher, lecturer, and since 1988 as a head of the department of zoology. In 1991 he defended his doctoral thesis "Helminths of pinnipedsof the World Ocean (systematics, fauna, ecology, zoogeography, coevolution with the hosts)." In 1992 he was given the title of professor. M.V. Yurakhno was a member of distant expeditions, including the Soviet-Amerikan ones. His work was devoted to the study of helminths of pinnipeds of the World ocean and the gray whales, their species composition and geographical distribution. He developed the hypothesis of dispersal of seals and walruses in the oceans. He discoverd 13 new species of helminths of marine mammals. He described the most prolific cestode in the world Baylisia supergonoporis Jurachno, 1989; the smallest trematode Microphallus orientalis Jurachno, 1968; trematode with eyes - Orthosplanchnus oculatus, 1969.