Wow this is definitely alot more interesting than the eggs in the 'egg oddities' post, this one is so much more conjoined and clearly has blood vessels running through. In the other case it seemed that it is quite possible although both eggs were connected, the insides were still 2 separate eggs, but this one clearly is joined, even inside. So the two balls that grow out of it can swim around each other. Hopefully they dont get tangled up though, good luck and keep us updated.