Sorry, I do not see the compatibility between shark-tagging and recreational diving. The former increases the risk to the latter, unacceptably and demonstrably. My career was sea-going oceanographic research; I would never have tried to combine such things. In your case, it is not like a bite from a pissed-off manta or a surprised whale shark is going to be fatal or even dangerous; but tagging Galapagos or Tiger sharks? No way.How so? My Revillagigedos trip last year was organized by the Marine Megafauna Foundation to tag and film mantas (whale sharks as well if sighted); unless your research program has access to a vessel capable of taking a science team out to remote islands or you're flush enough with cash to charter out an entire liveaboard vessel for multiple trips, partnering with recreational dive trips is about the only way to get out there. In our case (we were on the Nautilus UnderSea, formerly the UnderSea Explorer), we split the group between the three RIBs with the science party on one; the science party went off and did their own thing while the rest of us dove the sites as normal.
ADDED: My original post (#16) in this thread was responding to a post about tagging sharks on a recreational trip. The thread contents (and title) have evolved since then to indicate that the diver who was bitten was a marine scientist on a trip that had as its sole purpose the tagging of dangerous sharks. OK, that is their choice, it was not a recreational dive boat that had shark-tagging as an ancillary activity, which I what i was referring to as stupid.