glass tunnels allowing those in vehicles to look at what's under the sea duing their journey by road or rail-- sukiyaki, Nov 26 2008 I, too would rather take the raik, to avoid accidents caused by drivers goggling at the scenery.-- FlyingToaster, Nov 26 2008 complete with fish viewing rest areas-- sukiyaki, Nov 26 2008 Are fish that interested in rest areas?-- theleopard, Nov 26 2008 glass enclosed rest areas for viewing sea-life-- sukiyaki, Nov 27 2008 How will you deal with air pressure, air exchange, condensation, land-slides, earthquakes, auto accidents, and mussle build-ups?-- Voice, Nov 27 2008 tunnel is similular to walk-through aquiriums and seaworld-- sukiyaki, Nov 27 2008 nice concept.-- po, Nov 27 2008 I wonder why they didn't make the channel tunnel out of glass?-- wagster, Nov 27 2008 There probably is a reason. Who knows? Crazy engineers.-- theleopard, Nov 27 2008 It's pretty dark and murky at the bottom of most oceans, what with all the constant rain of dead creatures floating down from higher up - in all but the most tropical of oceans. It wouldn't be long before the glass is coated with a murky layer consisting of fishbones, algae, the corpses of ex-plankton, old boots, pirate treasure - all the usual stuff - what would be needed is some kind of wiping device so that the view of the pitch-black depths could remain unobscured.
But perhaps it would be nice to create an underwater network of interconnecting tubes to link up lands in a tropical archipelago - an area like the Caribbean would benefit massively* from land-connections between islands, and maybe even to the mainland.
*actual benefits may not materialise-- zen_tom, Nov 27 2008 ...-- apnea, Nov 27 2008 Drive a BMW, it beats the bendz.-- 4whom, Nov 27 2008 random, halfbakery