Transoceanic Migrations of Fishlike Animals and Fish: Norm or Exclusion?

Abstract

The paper presents an overview of data based on the analysis of published information concerning the transoceanic migrations of lampreys (Petromyzontidae), sharks (Selachii), and actinopterygian fishes (Actinopterygii). A classification of transoceanic migrations, including eight various types depending on their characteristic features, is proposed. It is shown that transoceanic migrations are rather an exclusion than a norm, even in such good oceanic swimmers as tunas of g. Thunnus and marlins (Istiophoridae).

Topics & Concepts