Good advice that Ifocus, sux when you forget to check ya boat

You can pay $5 (50k Rp) each way. Sometimes I paddle out & flag a boat down coz its there when I'm thinking of heading in, sometimes I'll get a boat out & paddle in. Low tide on the South ends not hard but highly recommend booties & watching for urchins.
Check out the shell store about 300m on the beach north of Pantai Gegar. If you haggle a bit & spend about $50 (500k Rp) you can get some really nice big tropical shells.
There are no rivers or anything running dirty water into the Nusa Dua area or anywhere South between the airport runway right around to Sanur apart from the rare occasion there are heavy rainfalls. A few years back there was a heavy rainfall coupled with a plumbing problem at the Mulia that turned Pantai Geger into a river that damaged the warungs. So a few got rebuild with Mulia compensation back then...and at the same time the closed river/creek thing at Dreamland broke its banks & washed away some beach chairs. There were/was/are some funny videos posted on youtube a local showed me 2 years ago from then but yeah like I said its rare & concern about infections is not an issue. Only other place I know is Ulu's but that happens in wet season when you should be focussed on the East side due to the wind being Westerly. Thats the time you here about heaps of rubbish washing onto Kuta beach because of the wind. I think things have improved a lot since Bali has stopped using plastic bags but a lot of it comes from Java & the past.
Saw a couple of foreingers with pick up sticks picking up cigs n stuff around a Beach at Sanur that was awesome. Things are improving I think.