There are two forests south from Grand Bend to Point Edward. If you dive the wreck Sweetheart north of Port Huron, off to the east is a massive underwater forest that straddles the border. We found it during dive practice. The other is off of Goderich/ Grand Bend area that Trotter found while looking for the Wexford. I do not know if the location was dived upon. It also seems that they exist only at a certain depth.