Appearance
Buddies
The Buddies tab is the people you dive with. Three sub-tabs: My buddies, Invitations and Explore.

Each buddy shows their name, their handle and where they're based. Tap one to open their profile: their dives, their certifications and their emergency card.
Being buddies is what lets you tag each other in dives, ask each other to certify a dive, and chat.
Finding people

Explore searches every diver on Blue Trails. Tap the add icon next to someone to send a buddy request — it lands in their Invitations tab, and yours shows the requests waiting for you.
The banner at the top — Not in Blue Trails? — is for the diver who isn't on the app yet: it sends them an email invitation.
Meeting someone on the boat
The fastest way to connect with the diver standing in front of you is your profile QR — see Share your profile.