Simi is rocky and covered with phrygana and conifer forest. The adjacent islets are unvegetated or covered with scrub. Human activities include fishing, tourism, stock-raising, and arable agriculture.
This is an important site for seabirds.
BirdLife International (2020) Important Bird Areas factsheet: Symi island and surrounding islets. Downloaded from http://www.birdlife.org on 27/10/2020.