Images Researched and Found from CC Search

Spinner Dolphin: https://en.wikipedia.org/wiki/Spinner_dolphin#/media/File:Spinner_Dolphin_at_midway.jpg

Author: Brocken Inaglory

Bottlenose Dolphin: https://en.wikipedia.org/wiki/Bottlenose_dolphin#/media/File:Tursiops_aduncus,_Port_River,_Adelaide,_Australia_-_2003.jpg

Author: Aude Steiner