The word "fin" typically refers to the flattened body part present in certain animals, such as fish, dolphins, and sharks, that helps them swim and maneuver in water. Full definition
Motion for a European Parliament Resolution on the application of Council Regulation (EC) No 1185/2003 on the removal of fins of sharks on board vessels (2006/2054 (INI)-RRB- (hsi.org)
In one circuit you can appreciate gray whales, blue whales fin whales and of course the humpback whales, along with the possibility of observing from two to six dolphins species in the same 6 - day circuit. (wildlifeconnection.com)
In March 2011, HSI called on the European Commission to prohibit the removal of shark fins on board vessels without exception. (hsi.org)