<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/df073e27-b519-40ba-8d6f-b128f621b311/FB83419B-F1B4-40CD-938F-1E5E259E2832/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://en.wikipedia.org/w/index.php?title=Scuba_diving&oldid=312294513" href="http://en.wikipedia.org/w/index.php?title=Scuba_diving&oldid=312294513" style="font-size: 11px;">en.wikipedia.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://en.wikipedia.org/w/index.php?title=Scuba_diving&oldid=312294513"><P><B>Scuba diving</B> ("scuba" originally being an <A class="mw-redirect" title="Acronym" href="http://en.wikipedia.org/wiki/Acronym">acronym</A> for <B>Self Contained Underwater Breathing Apparatus</B>, although now widely considered a word in its own right<SUP class="reference" id="cite_ref-0"><A href="#cite_note-0"><SPAN>[</SPAN>1<SPAN>]</SPAN></A></SUP>) is a form of <A title="Underwater diving" href="http://en.wikipedia.org/wiki/Underwater_diving">underwater diving</A> in which a diver uses a <A title="Scuba set" href="http://en.wikipedia.org/wiki/Scuba_set">scuba set</A> to breathe <A title="Underwater" href="http://en.wikipedia.org/wiki/Underwater">underwater</A> for recreation, commercial or industrial reasons.<SUP class="reference" id="cite_ref-usn_1-0"><A href="#cite_note-usn-1"><SPAN>[</SPAN>2<SPAN>]</SPAN></A></SUP> Unlike early diving, which relied exclusively on <A title="Surface supplied diving" href="http://en.wikipedia.org/wiki/Surface_supplied_diving">air pumped from the surface</A>, scuba divers carry their own source of <A title="Breathing gas" href="http://en.wikipedia.org/wiki/Breathing_gas">breathing gas</A> (usually <A title="Compressed air" href="http://en.wikipedia.org/wiki/Compressed_air">compressed air</A>),<SUP class="reference" id="cite_ref-Brubakk_2-0"><A href="#cite_note-Brubakk-2"><SPAN>[</SPAN>3<SPAN>]</SPAN></A></SUP> allowing them greater freedom than with an <A title="Air line" href="http://en.wikipedia.org/wiki/Air_line">air line</A>. Both surface supplied and scuba diving allow divers to stay underwater significantly longer than with <A title="Apnea" href="http://en.wikipedia.org/wiki/Apnea">breath-holding</A> techniques as used in <A class="mw-redirect" title="Snorkelling" href="http://en.wikipedia.org/wiki/Snorkelling">snorkelling</A> and <A title="Free-diving" href="http://en.wikipedia.org/wiki/Free-diving">free-diving</A>.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://en.wikipedia.org/w/index.php?title=Scuba_diving&oldid=312294513"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/en.wikipedia.org/img/BA3A771B-4C9E-4586-8A47-217F6C235434" alt="" /></div></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/FB83419B-F1B4-40CD-938F-1E5E259E2832/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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