Yet one of my boats is the Epic Touring 18 which is 18 feet long, fast, handles rough water well, surfs superbly, and can hold a ton of stuff... go figure.

: Paul summed it up - don't get hung up on the categories.

: That said, the Touring Kayak category vs. sea kayak is a group of
: kayaks that have hatches and bulkheads or just one bulkhead.
: They are usually one notch up from the recreational boats that
: have no bulkheads or hatches. "Touring" meaning to
: carry some stuff and go a bit longer than a few hours that the
: rec boat usually does. The Sea kayak usually gets a bit more
: official with better construction, a bit longer for more speed,
: usually rudders or skegs and more attention to details and a
: higher price tag.

:
: http://www.wildernesssystems.com/product_category/index/products/touring/