Underwater diving using breathing equipment SCUBA: Self-Contained Underwater Breathing Apparatus Term coined in 1952 Breathing gas = compressed air

Freediving is ancient First 9 months we exist in an aquatic environment Diving suit from 1873

Advanced Open Water: Follow up certification after Open-Water Diver; allows for deeper Buoyancy: (Positive, Negative, Neutral) Buoyancy refers to your position in the water. Divemaster: A professional-level scuba diver Freediving: Diving deep or staying underwater for extended periods of time without an air tank. Liveaboard: A cruise ship, yacht or other overnight boat that is tailored to scuba divers.

Scuba Tank Regulator BCD - Buoyancy Control Device Diving Mask Snorkel Wetsuit or Drysuit Fins Dive weights Dive computer

Largest ocean sinkhole in the world Can be seen from space Unique rock formations All types of sharks

Part of Malaysia Dormant underwater volcano Over 3,000 species of fish Wall dive to channel with current One of the richest marine habitats on the planet

In the Andaman Sea Only pinnacle anywhere nearby Covered in corals Challenging currents Can spend several days

Egyptian Red Sea 415 ft steamship launched in 1940 Sunk by the Luftwaffe in 1941 Difficult to reach, but popular Best visited with a liveaboard

Limestone steps you descend to reach the beach Shallow, turquoise waters Sea turtles, parrot fish, squirrelfish Great for snorkellers too

Buoyancy Clearing your Mask Emergency Ascents

OK Up/End the Dive Come Here Stop/Hold Stay Together Level Off Safety Stop Low on Air Out of Air

Open Water Deep Diving Drift Diving Wall Dive Night Diving Wreck Diving Ice Diving