Inside of this basin, which we called our Water Garden, the coral formations were much more wonderful, and the seaweed plants far more lovely and vividly coloured, than in the lagoon itself. And the water was so clear and still, that, although very deep, you could see the minutest object at the bottom. Besides this, there was a ledge of rock which overhung the basin at its deepest part, from which we could dive pleasantly, and whereon Peterkin could sit and see not only all the wonders I had described to him, but also see Jack and me creeping amongst the marine shrubbery at the bottom, like--as he expressed it--"two great white sea-monsters." During these excursions of ours to the bottom of the sea, we began to get an insight into the manners and customs of its inhabitants, and to make discoveries of wonderful things, the like of which we never before conceived. Among other things, we were deeply interested with the operations of the little coral insect which, I was informed by Jack, is supposed to have entirely constructed many of the numerous islands in the Pacific Ocean. And certainly, when we considered the great reef which these insects had formed round the island on which we were cast, and observed their ceaseless activity in building their myriad cells, it did at first seem as if this might be true; but then, again, when I looked at the mountains of the island, and reflected that there were thousands of such, many of them much higher, in the South Seas, I doubted that there must be some mistake here. But more of this hereafter.
I also became much taken up with the manners and appearance of the anemones, and star-fish, and crabs, and sea-urchins, and such-like creatures; and was not content with watching those I saw during my dives in the Water Garden, but I must needs scoop out a hole in the coral rock close to it, which I filled with salt water, and stocked with sundry specimens of anemones and shell-fish, in order to watch more closely how they were in the habit of passing their time. Our burning-glass also now became a great treasure to me, as it enabled me to magnify, and so to perceive more clearly the forms and actions of these curious creatures of the deep.