Mantis

The mantises or Mantodea are an order of insects that contains over 2,400 species and about 430 genera in 15 families, by far the largest family being the Mantidae ("mantids"). Mantises are distributed worldwide in temperate and tropical habitats. They have triangular heads with bulging eyes supported on flexible necks. Their elongated bodies may or may not have wings, but all have fore legs that are greatly enlarged and adapted for catching and gripping prey; their upright posture, while remaining stationary with fore arms folded, has led to the name praying mantises.

They are mostly ambush predators, but a few ground-dwelling species actively pursue their prey. They normally live for about a year; in cooler climates, the adults lay eggs in autumn, and die. The eggs overwinter, protected by their hard capsule, and hatch in the spring. Females sometimes practice sexual cannibalism, eating their mates after copulation, or occasionally decapitating the males just before or during mating.

Operation Praying Mantis

Operation Praying Mantis was an attack on 18 April 1988, by U.S. forces within Iranian territorial waters in retaliation for the Iranian mining of the Persian Gulf during the Iran–Iraq war and the subsequent damage to an American warship.

On 14 April, the guided missile frigate USS Samuel B. Roberts struck a mine while deployed in the Persian Gulf as part of Operation Earnest Will, the 1987–88 convoy missions in which U.S. warships escorted reflagged Kuwaiti oil tankers to protect them from Iranian attacks. The explosion blew a 15-foot hole in Samuel B. Roberts's hull and nearly sank it. The crew saved their ship with no loss of life, and Samuel B. Roberts was towed to Dubai on 16 April. After the mining, U.S. Navy divers recovered other mines in the area. When the serial numbers were found to match those of mines seized along with the Iran Ajr the previous September, U.S. military officials planned a retaliatory operation against Iranian targets in the Persian Gulf.

Persian Gulf

The Persian Gulf (Persian:خلیج فارس Khalīj-e Fārs) is a mediterranean sea in Western Asia. An extension of the Indian Ocean (Gulf of Oman) through the Strait of Hormuz, it lies between Iran to the northeast and the Arabian Peninsula to the southwest. The Shatt al-Arab river delta forms the northwest shoreline.

The Persian Gulf was a battlefield of the 1980–1988 Iran–Iraq War, in which each side attacked the other's oil tankers. It is the namesake of the 1991 Gulf War, the largely air- and land-based conflict that followed Iraq's invasion of Kuwait.

The gulf has many fishing grounds, extensive coral reefs, and abundant pearl oysters, but its ecology has been damaged by industrialization and oil spills.

The body of water is historically and internationally known as the "Persian Gulf". Some Arab governments refer to it as the "Arabian Gulf" or "The Gulf", but neither term is recognized internationally. The name "Gulf of Iran (Persian Gulf)" is used by the International Hydrographic Organization.

April 18

April 18 is the 108th day of the year (109th in leap years) in the Gregorian calendar. There are 257 days remaining until the end of the year.

Events

United States Navy

The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest, most capable navy in the world, with the highest combined battle fleet tonnage. The U.S. Navy has the world's largest aircraft carrier fleet, with ten in service, two in the reserve fleet, and three new carriers under construction. The service has 328,194 personnel on active duty and 101,199 in the Navy Reserve. It has 272 deployable combat vessels and more than 3,700 aircraft in active service as of February 2016.

The U.S. Navy traces its origins to the Continental Navy, which was established during the American Revolutionary War and was essentially disbanded as a separate entity shortly thereafter. It played a major role in the American Civil War by blockading the Confederacy and seizing control of its rivers. It played the central role in the World War II defeat of Japan. The 21st century U.S. Navy maintains a sizable global presence, deploying in such areas as East Asia, the Mediterranean, and the Middle East. It is a blue-water navy with the ability to project force onto the littoral regions of the world, engage in forward areas during peacetime, and rapidly respond to regional crises, making it an active player in U.S. foreign and defense policy.