This is because:
* Location of mammary glands: Manatee mothers have mammary glands located on their chest, just under the pectoral flippers.
* Positioning and support: The calf can easily position itself under the flipper, providing stability and support during nursing.
* Protection: The flippers also act as a shield, offering protection from predators and keeping the calf close to the mother.
So, while it might sound like a strange behavior, it's actually a natural and essential part of the nursing process for these gentle giants.