January 11, 2011. 1  According to Education Next, teachers retire, on average, at around the age of 58. AARP reports that 33 percent of all beginning teachers leave the teaching profession within three years of beginning their careers, but the majority of teachers continue teaching and can reap retirement benefits later in life.
Deep-sea anglerfish, hatchetfish, and lantern fish are among the best-known luminescent fishes. In most such fishes, luminescence is produced intracellularly; the light is emitted by special cells called photocytes. The anatomical structure of the luminous organs of many fishes is similar to that of squids.
The Fugu, also called globe fish, is a balloon fish with a big head and enormous eyeballs. It is a Tetraodontidae (it has 4 teeth), Some species can measure up to 1 meter in length, but most are small in size. Its liver, ovaries and eyes contain a very toxic poison, tetrodotoxin, which causes death within 6 hours. No antidote has been found yet !