The Andromeda is a commercial fishing vessel, moored in a slightly unusual spot, close to the aquarium. My guess is that fish are scarce and the crew have taken to visiting the aquarium to fill their quota. But, that's only a guess.

South Africa has a fairly long coastline of 2798km, so isn't it astounding that about 20% of our coastal areas have been declared MPAs (Marine Protected Areas) - stretches of cost where commercial fishing has been banned?

One day, but not right now, I'll go to the effort of tracing all the areas on a proper map, but for now, here's a link to a page on our government's Marine and Coastal Management website - it contains a terribly-formatted list of all areas marked as MPAs. Sorry. :)