There is much to like about this program: it has exciting plots with interesting heroes, you learn a bit about the sea and its ecology as you go, and you get to experience multiculturalism in the shape of different species sharing and working collaboratively. They even have different accents for each character, with my favorite being Tweak the bunny and her American accent (she must be from the south). My own personal three year old like Kwazii the eye-patched cat best, but then again he's an Aussie.
Most of all, though, I like the way the good old Star Trek formula was copied, almost to the letter, into a series that's aimed squarely at three year olds. Spock would have loved watching The Octonauts!
With Star Trek in mind, here is Captain Kirk's eulogy for the Discovery space shuttle. I know it's only loosely connected to the post, but it's damn cool: