Some conditions can cause the absence of OAE's. These include: cysts, external otitis (swimmer's ear for example), stenosis, or abnormal middle ear pressure, a perforated ear drum, otosclerosis, cholesteatoma.
The Gulf of Mexico (Spanish: Golfo de MÃ©xico) is an ocean basin largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba.
Depth. The average depth in the Gulf is 5,298 feet. The reported maximum depth is a matter of debate, but ranges as deep as 14,400 feet. Sea Current. The prevailing sea current in the Gulf of Mexico has water entering by means of the Yucatan Strait, between the Mexican Yucatan Peninsula and Cuba. It then circulates around the Gulf and streams out the Florida Straits into the Atlantic Ocean, producing that ocean's Gulf Stream. Mineral Resources. Offshore energy extraction is a major industry in the Gulf of Mexico. The oil and natural gas industries employ 55,000 Americans alone in the Gulf's waters. Fun Fact