The term "Sphenisciform seabird" is a scientific name for a group of birds known as penguins. They are known for their unique and distinctive appearance, with black and white feathers, and a waddling walk. Some synonyms for this term include "penguin-like seabird" and "flightless marine bird". Other terms that can be used to describe these birds include "aquatic avian", "beaked swimmer", and "flippers". No matter what you choose to call them, these birds are well-loved for their charm, cuteness, and ability to thrive in some of the harshest environments on earth.