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).
Juveniles and adults eat mostly bottom dwelling invertebrates such as whelks, other mollusks, horseshoe crabs, and sea urchins. Their powerful jaws are designed to crush their prey. Size: Loggerheads in the southeastern U.S. weigh an average of 250 lbs (113 kg) and are generally about 36 inches (92 cm) long.