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).
Apteryx haastii has similar brown and gray spotted plumage to A. Owenii, but is much larger. It is the largest of all kiwi species - 45 cm tall, with the female weighing an average 3.3 kg and up to 4 kg. Males average 2.4 kg. It has a shorter 10-12 cm long beak, and the female only lays one egg in a breeding season.