Tranøy means "crane" and the last element is "øy" which means "island". Prior to 1909, the name was written "Tranø". The coat of arms is from modern times; they were granted on 15 May 1987. The arms are silver or white with a black Atlantic halibut "(Hippoglossus hippoglossus)" in the center. The fish is a main species of local fish, which symbolizes the importance of fishing for the local community. In addition to this, the fish played a major role in local legends, similar to the role of bears in land-based legends. The Church of Norway has one parish "(sokn)" within
Pelagic fish stacks with a range of different spacings. A further complication for fish with bodies that are rounded in cross-section is that the mirrors would be ineffective if laid flat on the skin, as they would fail to reflect horizontally. The overall mirror effect is achieved with many small reflectors, all oriented vertically. Though the number of species is limited, epipelagic fishes are abundant. What they lack in diversity they make up in numbers. Forage fish occur in huge numbers, and large fish that prey on them are often sought after as premier food fish. As a group, epipelagic fishes form