Scuba Quizzes

Fish inhabit most of the world’s waterways and lakes, along with all of its seas and oceans. Diverse species in incredible colors, intriguing shapes, and possessing amazing abilities abound – no wonder fish are favorites with scuba divers and underwater photographers!

Anemones add color and motion to the underwater world, and are among the most common marine creatures you’ll find at a variety of the dive sites you visit. About how many known sea anemone species do the world’s oceans contain? How big is the world’s largest anemone species?

The deeper you get into scuba diving, the more technical information you need to learn. For example, what’s the percentage of oxygen in an EAN36 mixture? What happens to the air molecules inside your BCD as you make an ascent? What on earth is the valsalval maneuver?

Basic scuba diving skills aren’t difficult, but they must be executed with care in order to bring about the desired effect. How do you clear your mask? What happens to water when a diver does the frog kick? What are two ways you can use less air while diving?