Underwater Scuba Diving Hand Signals and Communication -- The Basics.
From "How to Receive a PADI Certification for Open Water Scuba Diving in Florida" by H. Ebert.
An academic submission for the "Current Theories in Rhetoric and Composition (Rhetoric and Multimodality)" Course at St. Edwards University.
Music by The Calm Blue Sea (of Austin)
http://www.thecalmbluesea.com