In addition, anhingas do not have to swim to stay underwater because their bodies ... and the double-crested cormorant (Nannopterum auritum), Journal of Comparative Physiology B (2024).

The Brandt’s cormorant ... the surface and swimming down as far as 70 metres (230 feet) to catch their prey which they will then swallow head first. Although he didn’t grow up by water, Sage has ...