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).
The Greater Amberjack is found inshore in waters less than 30 feet deep usually amongst floating objects. Usual size for this fish inshore is from 3kg to 7kg. Offshore this species is found in rocky reefs and wrecks typically in water from 60 to 240 feet and the most common size is form 7kg to 27kg.