Canada also has a substantial underwater logging program underway, and efforts will likely show up wherever there is wood underwater. Check out this breathless prose that describes an underwater logging machine:
Triton's Sawfish™ Underwater Harvester represents the first true arrival of viable marine technology in underwater forests. Developed and manufactured by Triton, it is the world's only deep-water logging machine, combining proven elements from timber-harvesting and submarine vehicle technology on an innovative platform.This is not new, in the US northwest, logs were pulled out of streams to "clean" them, but also because it's an easy way to make a timber quota, haul a few logs out of a stream by a road to top off a year's logging.
There is a risk that mucking about underwater will harm underwater habitat even while it offers the possibility of sparing forests on land. Tweet