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 ocean floor consists of abyssal plains, but these flat, featureless regions are covered with sediment and largely devoid of benthic life (benthos). Deep sea benthic fishes are more likely to associate with canyons or rock outcroppings among the plains, where invertebrate communities are established. Undersea mountains (seamounts) can intercept deep sea currents, and cause productive upwellings which support benthic fish. Undersea mountain ranges can separate underwater regions into different ecosystems. Small pelagic fish are usually forage fish that are hunted by larger pelagic fish and other predators. Forage fish filter feed on plankton and are usually less than 10 centimetres