Seguenzia beloni is a species of sea snail, a marine gastropod mollusk in the family Seguenziidae. Specimens were discovered in a trawl at 400 meters depth then named after Pierre Belon (1517âÂÂ1564), a French naturalist.
The height of the shell attains 2.5 mm.
This marine species occurs off the Philippines, and lives near the ocean floor within the demersal zone of tropical waters.