Teams from the Institute of Marine Mammal Studies keep a pygmy killer whale hydrated while they prep it for release into the Gulf of Mexico, July 11, 2016. Personnel from National Oceanic and Atmospheric Administration, Navy Marine Mammal program and U.S. Coast Guard Cutter Cypress also participated in the mammal’s release. U.S. Coast Guard photo by Petty Officer 3rd Class Lexie Preston.
Date 11 July 2016, 00:00
Source A Whale of a Tale
Author Coast Guard https://www.flickr.com/people/30884892@N08
Source: https://commons.wikimedia.org/wiki/File:A_Whale_of_a_Tale_(33625882305).jpg

The pygmy killer whale (Feresa attenuata) is a poorly known and rarely seen oceanic dolphin. It derives its common name from sharing some physical characteristics with the killer whale. It is the smallest species that has "whale" in its common name.