My first completed specialty is SSI Enriched Air Nitrox. I studied the night before, scored 100% on the written test, and then took a cylinder with 33.1% oxygen through the Shangri-La Marine Sanctuary off Mactan Island, Cebu, Philippines.
Ironically, this was one of my shortest dives to date. I had a mesh bag in one hand for the trash that my instructor and I were picking up, and I was taking underwater photos with my other hand. I also swam around and through a small boat wreck with no overhead environment.
So, with all of the additional movement that I was doing, and against a slight current, I went through my tank fairly quickly.
But, like I’ve blogged before, I prefer shorter, more-exciting dives over longer, less-exciting dives. Picking up trash, taking photos, and seeing my first wreck combine together to make one exciting dive.
The dive lasted 35 minutes, and my maximum depth was 21.2 meters.
After the dive, we scheduled my next specialty course: SSI Perfect Buoyancy. I could use these skills to improve everything I did on this dive, plus improve my oxygen efficiency while doing them.