Gallon pints. These pints are divided into two cups (though the imperial cup is rarely used now), which in turn are divided into two gills (gills are also rarely used). Thus a gallon is equal to four quarts, eight pints, sixteen cups or thirty-two gills. The imperial gill is further divided into five fluid ounces, whereas the US gill is divided into four fluid ounces. Thus an imperial fluid ounce is of an imperial pint or of an imperial gallon, while a US fluid ounce is of a US pint or of a US gallon. The imperial gallon, quart, pint, cup
Gills Bay more common, this area having one of the largest British populations, however the common seal is also present. Wild dogs are often spotted around the Gills area which are believed to have come across on the ferry from Orkney. Porpoises can be seen all year round in all parts of the firth and at Gills Bay as they tend to favour shallower water. Usually seen singly or in small numbers although in the autumn many large groups may be seen in Gills Bay where they congregate. Basking sharks are rare but are being seen more often around May to August.