g. r. e. s. in english is the recreational samba school society. the boca siri or, mouth of siri was established on december 7, 1979, as a bloc do canival or, street band.

the schools colors are green and white. its emblem or representative symbol is a cartoon crab.

the crab is a siri. the siri is found on brazil's northeast coast and is highly valued and considered a delectable crab species by brazilians.