I recently overcame one of my Greatest Fears and touched a shark!
Granted, he was only 2.5 feet long and couldn't bite through a wet paper bag made out of lettuce and manatee farts, but I touched it! And I survived! With all of my fingers and my pride!
Then Beloved Husband asked me if I wanted to touch one of the big ones and I told him I'd rather stick my head in a bell jar full of pissed-off hornets. My limit on sea creatures is 3 feet - anything bigger can fuck right off, thank you very much. That includes seaweed, crocodiles and stingrays.