The tips provided are excellent! On a selective note for SCUBA Collecting. 1) You can SCUBA dive with pair of 6" stainless steel tweezers, and also with a set of nylon tipped. I have found that narrow tipped is preferred. This allows you to pick a particular shell from a crack or form other sea life without damaging it. It also allows you to get larger shells such as a cone from a crevice that you couldn't reach. Experiment some... you may want to put some small shells in a bucket of water and practice picking them up. Glossy shells such as Marginellas are particularly slippery and require a bit of skill. That is why I also carry nylon or rubber tipped. Tweezers slide easily up the sleeve of a wet suite (although I have special pouches on mine to hold them). Carry the tweezers when you are rock collecting inter-tidally too. The shell you want will no doubt be in the crack you can't get to with your fingers. 2) I also carry a "pouch" with a draw string made out of no-see-um screen. This pouch is about 8'deep and about 5" wide, about 1/3 of the way down there is a strip of Velcro that is used to pull the pouch together creating a bottle- neck effect. It unfurls to allow you to fully open the pouch for emptying. It is secured to my wrist with a standard SCUBA lanyard, however I often keep it tucked away in a pocket etc. until needed. A larger version of the same pouch is what I use for other shells... thus often ending up with more micros which were commensal with the larger (up to 2") shells I have collected. Hope this is helpful! Best Regards, Leslie Allen Crnkovic