captain
Contributor
I tend to use the term solo in both situations, when I am the only person in the water and when I am in the water but not in an agreed on buddy situation. This comes from my spearfishing experiences where another diver I am with may enter and leave the water at different times and may never actually see each other during the dive, or be seperated by visibility, depth or distance. Maybe we need a description other than solo to describe both situations such as buddyless divers and alone or solo diver.