This swim felt a bit rusty after a week off. Certainly I was faster with the snorkel, as I should be, but I tired noticeably in the sets from 100m to 500m. Nonetheless the pace for the 500m was better than 2:40min/100m which was OK for a fair length set.
I did have two pauses early in the session as I dropped my nose clip whilst removing the snorkel. I could have left it at the bottom of the deep end but that felt wasteful. On the first dive I couldn't see my goal and merely found a bit of debris. I swim 2 lengths and came back and had a successful attempt. sinking below 4m felt hard work and very much a pressure on my ears and sinuses!