In its gorgeous colours the opah surpasses even the dolphins, all the fins being of a bright scarlet.
Will we see any dolphins, Dad?
Sea-lions, seals and dolphins are a source of profit.
Meerschwein, although the word is commonly used by sailors to designate all the smaller cetaceans, especially those numerous species which naturalists call "dolphins," it is properly restricted to the common porpoise of the British' seas (Phocaena communis, or P. phocaena).
The Cetacea, which frequent these southern waters, are represented by four species - two dolphins and the sperm and right whale - and the Phocidae by six species, one of which (Phoca lupina) differs but little from the common seal.