ETYMOLOGY
from Latin mari-, mare (sea) + –colus (inhabiting, colere (to inhabit))
EXAMPLE
“…The members of this genus are small, constantly apterous, gregarious, maricolous, and inhabit relatively still salt and brackish waters of bays, atolls, estuaries, inlets…”
From: Studies on the Fauna of Suriname and Other Guyanas
By D.C. Geijakes, 1962
Lexicophilia 