She was often at the lagoon, however, on sunny days after rain, when the mermaids come up in extraordinary numbers to play with their bubbles.

The bubbles of many colours made in rainbow water they treat as balls, hitting them gaily from one to another with their tails, and trying to keep them in the rainbow till they burst.

The goals are at each end of the rainbow, and the keepers only are allowed to use their hands.

Sometimes a dozen of these games will be going on in the lagoon at a time, and it is quite a pretty sight.
But the moment the children tried to join in they had to play by themselves, for the mermaids immediately disappeared.

Nevertheless we have proof that they secretly watched the interlopers, and were not above taking an idea from them; for John introduced a new way of hitting the bubble, with the head instead of the hand, and the mermaids adopted it.