I have a set of about 20-odd DVDs, each with four episodes. It's standard rainy-day viewing at our Tobermory place. Mike had a few cool gizmos that I've noticed watching these shows... My favorite is the "Multiplying Tank"... He jumps out of the boat wearing a single. Part way down, the film shows him wearing twins. When he gets into deep water, they magically become triples. This would really help my back!
I've also noticed amazing fins. Again, when he jumps of his boat, the Argonaut, they appear as sneakers, but morph into fins in the water. This would be a great safety feature.
You'll also see some "future stars" appearing in various episodes, usually as villains... Larry Hagman and Leonard Nimoy come to mind. There are also recycled actors... There's a few guys of swarthy complexion and with unusual accents that is kind of a "Boris Karlov meets Zorro" hybrid. These guys appear in different episodes sometimes as a corrupt government official in a mysterious southern country, a fisherman in Baha, or a foreign Coast Guard officer. "Continuity" is lacking a bit...
It's an awesome, endlessly entertaining series and should be mandatory watching for an diver.