Roger D Hall: Amazon River Dolphin
Roger D Hall: Atlantic Spotted Dolphin
Roger D Hall: Beluga Whale
Roger D Hall: Bottlenose Dolphin
Roger D Hall: Gray Whale
Roger D Hall: Humpback Whale
Roger D Hall: Harbor Porpoise
Roger D Hall: Hourglass Dolphin
Roger D Hall: Killer Whale or Orca
Roger D Hall: Minke Whale
Roger D Hall: Pacific White-Sided Dolphin
Roger D Hall: Short-Beaked Common Dolphin
Roger D Hall: Spinner Dolphin
Roger D Hall: Sperm Whale
Roger D Hall: Short-Finned Pilot Whale
Roger D Hall: Commerson's Dolphin