Cutting down trees is a pretty simple proposition. But what if said trees are underwater? Not so smart now, are you? It isn't easy convincing loggers to don their scuba outfits and grab waterproof chainsaws, so Triton Logging went ahead and created the Sawfish.

The world's only deep-water logging machine, the Sawfish is one part submarine, one part chainsaw, and one part soulless killing machine. Unlike most loggers, the Sawfish is actually environmentally viable, running on vegetable-oil-based hydraulic fuel and cutting down trees in places that new roads and other detrimental effects of standard logging don't apply. Just be careful if you're wearing a bark-hued scuba suit — that's an ugly way to go. — Adam Frucci

Treehugger, via Core 77