If you're looking for an economical dive knife then the Ocean Pro Blade just might fit the bill. The Ocean Pro Blade is made from 304 Grade Stainless Steel with a 5" (14 cm) blunt Blade. The Knife Bladed has a Straight Edge on one side with a Partial Serrated Edge on the other. The Serrated side of the Blade also is equipped with a Line Cutter. The Impact Resistant Handle is ribbed for a Positive Grip and has a Metal Hammer End. The Ocean Pro Blade Knife comes with a Quick-Release Locking Noncorrosive Plastic Sheath with Adjustable Straps for mounting on the diver's leg or gear.
This is a flat/blunt tip knife, so is suitable for paua collecting.