Oceana was designed by a client who wanted a very fine, investment grade tactical CSAR dive knife. The answer was the very elaborate and complicated "Oceana." The design is based on my "Treatymaker" double edged pattern, with a main grind done with a 10" contact wheel and the differential top grind accomplished with a 3" contact wheel for a very thin cutting edge without sacrificing internal spine strength. The top edge has a good length of my Vampire rip teeth serrations, for the toughest sawing and ripping chores. At the bottom edge, I've included a .250" line cutter for that stubborn monofilament. The blade is completely mirror finished, for a easy care, corrosion resistance, and a stunning look. The bolsters are sculpted 304 high nickel, high chromium austenitic stainless steel for zero care and ultimate corrosion resistance. The rear bolster has a full, deep "hawk's bill" rear quillion for secure handling in either traditional or tactical grip, and has a 5/16" through-tang lanyard hole for the ultimate in security in wet environs. I've carved the blade with my stunning "Sun-Moon" filework, to help secure the grip and add a lot of visual interest and punch. The handle material must match the theme, so we agreed upon 70+ million year old Turitella Agate fossil; petrified sea bed turned to agate and chalcedony gemstone by the hand of God. It's absolutely stunning! I made two sheaths for this monster knife, one of my fully waterproof stainless steel, kydex, and aluminum locking sheaths and a tension sheath that will be easier to manipulate.