Algy decided to move onto the rocks for a spot of chilly sunbathing. The amazing colours of the water in the bay reminded him of a poem he used to love when he was just a wee chick, except that here the jewels were in the sea itself:
Stately Spanish galleon coming from the Isthmus,
Dipping through the Tropics by the palm-green shores,
With a cargo of diamonds,
Topazes, and cinnamon, and gold moidores.
[Algy is quoting the middle verse of the poem Cargoes by John Masefield.]