The fauna and flora of the Sea are as much the creatures of Climate,
and are as dependent for their well-being upon temperature, as are the
fauna and flora of the dry land. Were it not so, we should find the
fish and the algæ, the marine insect and the coral, distributed equally
and alike in all parts of the ocean; the polar whale would delight in
the torrid zone; and the habitat of the pearl oyster would be also
under the iceberg, or in frigid waters colder than the melting ice.