Liveaboard  - a boat or vessel which travels out to a dive destination or dive site, and stay's overnight or more. 

Why a Liveaboard? Staying onboard a vessel allows the scuba diver to get to remote areas and dive these areas, like the Galapogas Aggressor. Some locations are just not possible by a vessel returning to land each night or what's called a day trip. In saying that each vessel will find a safe, secure haven for the night for optimal safety for the passengers and crew. However, it is not for everyone as it does mean time at sea and being at sea, can be subject to adverse weather conditions.

If you haven't been on a Liveaboard its a great experience and you will be hooked!