You can catch a ferry boat or rez your own boat in Half Hitch (SLurl). If you ever wonder where everyone is at in Second Life, you can always find some in the Blake Sea regions.
Sometimes you run across a lake on Mainland. Lots of folks make ponds or live along the few rivers, but sometimes a nice lake pops up. I used to think that SL was just tropical islands. This small lake in Pumori is a refreshing change.
Degrand is a cute little island and a lovely place for a large sea dragon to find fresh noobies to eat .. erm.. greet. There's a wonderful little light house and some other nice builds on the island. A noob asked me "How do you play this game?" and I replied as I usually do: "Second Life is not a game, it is a virtual world you can explore, like this nice spot, and maybe find some games to play." Then I gave him some landmarks for interesting places to visit and other landmarks for noobie-friendly freebies. I can think of worse places for a noob to start out at than Degrand (SLurl). It's a lovely little place.