Fishing is done in the shallow seas with some of the boats operating out of Delfzijl and Farmsum harbor where much inland shipping is also handled. An old sea gate at Farmsum was replaced by newer gates nearby leaving a sheltered inland harbor. Low tide exposes extensive mud flats that add to tourism and environmental activities. Delfzijl is a bird sanctuary during high tides that cover the feeding grounds with sea water.
Fishing is done in the shallow seas with some of the boats operating out of Delfzijl and Farmsum harbor where much inland shipping is also handled An old sea gate at Farmsum was replaced by newer gates nearby leaving a sheltered inland harbor. Low tide exposes extensive mud flats that add to tourism and environmental activities. Delfzijl is a bird sanctuary during high tides that cover the feeding grounds with sea water.