BRITISH MAMMALS 
In their playful moods, they will leap quite clear of the sea, as 
shown in the Plate. They seem to have no dislike to fresh water 
and will ascend rivers like the Thames where they have been seen 
well above London Bridge. 
The Porpoise lives chiefly on fish, including grilse, mackerel, herring, 
pilchard, and others, and will often follow the shoals as they approach 
the coast. 
At one time its flesh was popular as an article of food. 
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