Your First 12 Weeks During your expedition phase, you will live at our base on Mahe Island, one of two GVI bases in the Seychelles. Depending on weather conditions, we aim for everyone to have 1 or 2 dives/snorkels each day, 5 days a week, during which you will conduct underwater surveys after completion of your training. Besides diving, you should expect to be involved in additional projects and activities, including training sessions, marine debris surveys and removal, environmental education session or alternative income training, depending on local and project needs at the time. The days are rounded off with an evening debrief, followed by dinner and time to relax, take in a beautiful sunset and share stories.