Mizan | Mehdi Mohebbi Pour: The fishing season has begun in northern Iran as pelicans are catching fish along with fishermen. The Caspian Sea located to the north of Iran is the world�s largest lake. The fishing season there begins on October 12 and ends on April 4 the next year. Different species of fish live in the sea. The Caspian Sea accounts for a large portion of the world�s sturgeon. With the arrival of autumn, thousands of fishermen in north of Iran prepare their nets and head for the sea.