Deep-Six Underwater Systems, Inc.
"Add Depth to Your Life"

Table of Contents

1 Pressure and Gases
2 The Face Mask
3 The Snorkel
4 The Fins
5 Weight Systems
6 The Knife
7 The Wetsuit
8 Pressure and Water
9 The Ear and Pressure
10 The Sinus and Pressure
11 The Stomach/Intestine and Pressure
12 The Lung and Pressure
13 Barotrauma caused by External Air Spaces
14 The Buoyancy Compesation Device (BCD)
15 The Scuba Cylinder
16 The Scuba Cylinder Valve
17 The Regulator
18 Density and the Diver
19 The 4 Gas Laws
20 Hand Signals
21 Carbon Monoxide Poisoning
22 Hyperventilation
23 Nitrogen Narcosis
24 Diver's Flags
25 Sound Underwater
26 Color Underwater
27 Decompression Sickness
28 Breathing Oxygen
29 Deep Diving
30 Thermoclines
31 Thunderstorms
32 Underwater Life
33 Open Water Dives
34 The Final Examination
35 The Environment
36 Advanced Course

32 - Underwater Life

     Reaction to outside stimuli causes one to fight, freeze, or flee. If you were confronted by an armed robber with a pistol, your reaction would be to choose fight, flight, or freeze.You might lunge at the robber in the attempt to get their weapon (fight). You might run out a nearby open door and than down the hallway hoping to avoid getting shot as the escape is made (flight). You might just stand there with your arms in the air hoping no further action will be taken (freeze).

     With most land animals we come to expect they will freeze or flee upon the approach of a human. They are defensive. Do you know what it would be like if white-tailed deer, commonly found in the northeast part of the United States, commonly went into a fight mode when approached by a human being. We expect deer to run from us and then possibly stop after going a short distance. This flight and freeze is expected and allows one to walk calmly through the woods. We expect animals to be defensive. And, on the rare occasion when they do become offensive (fight) it is because of unusual circumstances such as being cornered, defending their young, etc.

     Underwater it is the same. Most marine life generally do not attack. For the most part they are defensive and will either stay in place or flee when approached. But, they are defensive. So, if a Moray Eel sees your hand entering his rock den a wound might be inflicted. If you load the water with blood from spearfishing, the appetite of predators might be wetted promoting a food-seeking attack. If you go to the surface and make splashing noises with your fins, simulating a wounded fish, you might be inviting a fight mode. If you wear jewelry underwater that resembles a fishing lure you may end up as a human fishing pole. If you start dropping chunks of coral on sharks below you may get more than you bargained for.

     Now it is not implied that all attacks of life on man are the result of man's aggressive behavior. Some of them are the result of the species being hungry or defending their young from what was perceived to be aggressive behavior. A diver gathering balls and then being eaten by an alligator in a Florida golf course pond may have nothing to do with aggression by the diver to the gator.

     In all the dives this author has made in the Caribbean and Florida, and all the sharks, barracuda, and other wild life seen, there has never been an instance were the situation seemed threatening. But, then again, when I go to visit a neighbor I ring the doorbell and don't just kick in the back door!

Copyright Information about this text, DIVING WITH DEEP-SIX is as follows: Copyright 1996 - 2007 by George D. Campbell, III; President. All Rights Reserved. This file may be posted on Electronic Bulletin Boards for download, but may not be modified, printed for distribution, or used for any commercial purpose without the author's written permission. is using this material with the permission of Deep Six. The full version is available at:
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