Dive Atlas of the World: An Illustrated Reference to the Best Sites (IMM Lifestyle Books) A Global Tour of Wrecks, Walls, Caves, and Blue Holes from Lawson Reef to the Red Sea to the Great Barrier
The Most Crucial Knots to Know: Beginner Step-by-Step Guide How to Tie 40+ Knots for Camping, Survival, and Preppers (Adventure)
Cave Exploring: The Definitive Guide to Caving Technique, Safety, Gear, and Trip Leadership