Kick-'em-Jenny rises 1,300 m (4,265 ft) above the sea floor on the steep inner western slope of the Lesser Antilles ridge.

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 larger eruptions have also been heard underwater or on land close to the volcano as a deep rumbling sound.

[1] A submersible survey in 2003 detected a crater with active fumaroles releasing cold and hot gas bubbles.

There is a Maritime Exclusion Zone monitored by the Seismic Research Centre of the University of the West Indies, Trinidad and Tobago.