The extraocular muscles must turn each eye inward; the sphincter muscles must work to make the pupil smaller; and the ciliary muscles must contract to allow the lens to change to a shape that will produce a clearer image. Solution: Focus on a distant object to immediately feel your eyes relax.
Its upper body is blue, the belly is silver, and the fins are yellowish-gray. The common amberjack can reach five to six feet (1.5 to 1.8 m) in length and more than 100 pounds (45 kg) in weight. The average weight, however, is 10 to 15 pounds (4.5 to 6.8 kg).
10 most extreme places on Earth. For anyone that enjoys fish, whether catching or eating them, it is a good idea to know a little bit about the amberjack. Here is some basic information about the two types of amberjack, how to tell the two apart, and some of the different ways that amberjack can be prepared. The first classification for the amberjack is that of Seriola dumerili, or greater amberjacks. The greater amberjack possesses a series of dark stripes that extend from the nose to the front area of the dorsal fins. Greater amberjacks are typically quite a large fish, usually weighing around forty pounds.