Final answer:
A. Whitman Miller from the Smithsonian Environmental Research Center Marine Invasion Research Laboratory helped save the seal pup entangled in plastic.
Step-by-step explanation:
The marine life professional who helped save a seal pup entangled in plastic was A. Whitman Miller from the Smithsonian Environmental Research Center Marine Invasion Research Laboratory in the USA. A. Whitman Miller and his team specialize in marine invasion research and are dedicated to studying and protecting marine life from invasive species and other threats.