leaned over the side and gazed down into the clear crystal depths with
unwearying delight.

For the wonderful colours displayed in those depths must be seen to be
believed. Not only is the eye pleased with the ever-varying formations
of the coral bowers, but almost dazzled with the glittering fish--blue,
emerald, green, scarlet, orange, banded, spotted, and striped--that dart
hither and thither among the rich-toned sea-weed and the variegated
anemones which spread their tentacles upwards as if inviting the gazer
to come down! Among these, crabs could be seen crawling with undecided
motion, as if unable to make up their minds, while in out of the way
crevices clams of a gigantic size were gaping in deadly quietude ready
to close with a snap on any unfortunate creature that should give them
the slightest touch.

Nigel was sharply awakened from his dream by a sudden splash. Looking up
he observed that the small boy was gone. With a bound he stood erect,
one foot on the gunwale and hands clasped ready to dive, when a glance
revealed the fact that Kathy was smiling broadly!

"Don't jump!" she said. "He is only after a fish."

Even while she spoke Nigel saw the brown little fellow shooting about
like a galvanised tadpole, with a small harpoon in his hand!

Next moment he appeared on the surface shouting and spluttering, with a
splendid fish on the end of his harpoon! Both were hauled into the
boat, and very soon after they drew near to land.

In the shallow water Nigel observed some remarkable creatures which