Kick 'em Jenny (also: Kick-'em-Jenny or Mt. Kick-'Em-Jenny) is an active submarine volcano or seamount on the Caribbean Sea floor, located north of the island of Grenada and about west of Ronde Island in the Grenadines. Kick-'em-Jenny rises above the sea floor on the steep inner western slope of the Lesser Antilles ridge. The South American tectonic plate is subducting the Caribbean tectonic plate to the east of this ridge and under the Lesser Antilles island arc. Etymology The volcano was unknown before 1939, although "Kick 'em Jenny" appeared on earlier maps as either the name of a small island now called Diamond Rock (or Île Diamante), or the name of the strait between Grenada and Ronde Island (or Île de Ronde). The name itself may be a reference to the waters sometimes being extremely rough. Activity The first record of the volcano was in 1939, although it must have erupted many times before that date. On 23–24 July 1939 an eruption broke the sea surface, sending a cloud of steam and debris into the air and generating a series of tsunamis around high when they reached the coastlines of northern Grenada and the southern Grenadines. A small tsunami also reached the west coast of nearby Barbados, where "a sea-wave" suddenly washed over a coastal road, most likely at Paynes Bay. The volcano has erupted on at least twelve occasions between 1939 and 2001 (the last being on December 4, 2001), although no subsequent eruption has been as large as the 1939 one, and most were only detected by seismographs. The larger eruptions have also been heard underwater or on land close to the volcano as a deep rumbling sound. A submersible survey in 2003 detected a crater with active fumaroles releasing cold and hot gas bubbles. Samples of fresh olivine basalt were collected. An arc-shaped collapse structure appears on the west flank and was the apparent source of a submarine debris avalanche extending down the ridge slope to the west toward the Grenada Basin. The Global Volcanism Program reports the summit to be below the sea surface. Signs of elevated seismicity began July 11, 2015, and on July 23 a strong continuous signal was recorded by instruments observing Kick 'em Jenny, prompting authorities to raise the alert level to orange, which is the second-highest level. The following day, July 24, at 02:00 an hourlong explosion event was recorded, scientists