Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans.
Serangga dapat ditemukan di hampir semua lingkungan, meskipun hanya sejumlah kecil yang hidup di lautan, suatu habitat yang didominasi oleh kelompok arthropoda lain, krustasea.