Yeah, our PV DM was hands on too, as were the DMs in Ixtapa/Zihuatenejo years ago. I hadn't seen a puffer puffed up by a DM since I went to Roatan, also years ago. I ignored it, so as not to encourage the DM, but he handed it to the other two divers with us. I like playing with marine life as much as the next diver, but puffing puffers is controversial as it's not well understood whether they can only puff a certain amount of times in their lifetime or whether it's harmful to them in any way. Octopi are curious and sometimes enjoy the interaction (they'll squirt their ink and flee if they're not having fun) but be really careful after handling one since they're a favorite of morays and, being almost blind, morays will bite your hand if they smell octopus on you.As far as marine life goes, on my certification dives I saw (and held, guilty and gleefully at the prompting of the instructor) an octopus, a seahorse, a pufferfish, some kind of spider crab, a sea urchin, a sea cucumber, and a starfish, and there were plenty of angelfish, parrotfish, pufferfish, and other little tropical fishies toward the surface. It took a few more dives to see green sea turtles, round rays, eagle rays, garden eels, giant moray eels, nudibranchs, stonefish (no touchy!), some anemones, little corals, bioluminescent plankton, and massive underwater rock formations, big as buildings.