
Shanna knew the answers to many of these questions - for instance, the Lake has 72 miles of shoreline and is the 12th deepest lake in the world. It's also about 99% pure, making the water a deep, cerulean blue at its greatest depths and a light emerald in its shallow parts (such as in the aptly named Emerald Bay section).
The questions she couldn't answer - largely because their answers hail from the bubbling fountain of useless knowledge into which I'm always throwing pennies - were soon addressed on the M.S. Dixie , a large paddle boat that cruises the lake and offers a sampling of factoids in addition to lunch and drink service.

Shanna and I nodded solemnly as a pre-recorded voice relayed these facts to us, and we munched our wrap sandwiches and sipped a couple of Sierra Nevada brews - when in Tahoe, I say.
"Guess that answers the currents question," she said between bites.
"Indeed," I replied. But I'm still curious to know more about that rumored creature of the deep. How many are there? Has it evolved? Can we go on an expedition to find one?
Does it ski?