This paper discusses how transaction data can be used to shed light on trade dynamics
in seafood exports, with Norwegian salmon exports as the case. There is a large literature
on exports and imports of salmon between countries, but less is known about how the
heterogeneity of exporters and importers relates to the aggregate data. We utilize
transaction data for all exports of salmon in the period 2010-2014 and show that firms
involved in salmon exports holds several of the characteristics that are commonly
found in the international trade literature, but differs in some important dimensions.
Most exporters of salmon connect to relatively many importers and serve many different
destination markets. Short-lived trade relations are shown to account for a large
share of export values.