The Coral Island (Musaicum Adventure Classics). R. M. Ballantyne

      “There, now,” said Peterkin with a sneer; “you were always telling me it was too long.”

      Jack now drove the spear forcibly towards the object, and let go his hold. But although it seemed to be well aimed, he must have missed, for the handle soon rose again; and when the spear was drawn up, there was the pale-green object in exactly the same spot, slowly moving its tail.

      “Very odd!” said Jack.

      But although it was undoubtedly very odd, and although Jack and all of us plunged the spear at it repeatedly, we could neither hit it nor drive it away, so we were compelled to continue our journey without discovering what it was. I was very much perplexed at this strange appearance in the water, and could not get it out of my mind for a long time afterwards. However, I quieted myself by resolving that I would pay a visit to it again at some more convenient season.