‘Yes,’ I said. ‘But why are we on here? Why hasn’t it eaten us? Why won’t it let us go?’

‘We’re its pets,’ said James. ‘That’s why it feeds us with fish every day. Or most days, at least.’

‘We’re like parasites, aren’t we?’ I said.

‘Nope,’ said James. ‘The Jellyfish is the parasite living under me.’

‘Like the fleas on top of a dog,’ said Lana, ignoring him. She dug into the surface with her fishbone pen and we watched as she carved a large ‘L’ for Lana. By the time she got to the bottom of the letter, the jelly was already starting to seal itself closed again at the top.

‘But why do you think it feeds us?’ I said. ‘Do you really think a jellyfish would want to keep pets?’

‘People used to keep fish as pets Before,’ said Kate.

‘Losers did,’ said Lana. ‘Why would you want to keep fish in your house? That’s weird.’

‘No, I suppose I don’t think a jellyfish would want to keep pets,’ said James. ‘I think it might want to farm us though, like people used to do with sheep and cows. And didn’t people also used to have fish farms in the old days too?’

‘Really? Is that what you think it’s doing?’ I asked.

‘Yes,’ said James. ‘I honestly think that’s the only reason we’re here.’

‘But nobody’s had a baby,’ I said. ‘Aren’t farms about producing more animals?’

‘Well, we can change that . . .’ James gave me a big wink and nodded his head towards the Big House.

‘No, James,’ I said. ‘Seriously. No.’

‘Oh, come on, Martha. I’m so BORED!’ he wailed.

‘If it’s farming us,’ said Lana, ‘how come nobody’s been eaten, then? And who’s it farming for? Is it for another creature? Or for itself? None of that makes sense.’