The term 'Tube-Nosed Seabird' is a general description of a type of bird that has a long, tube-like beak. One example of this type of seabird is the PETREL, which is a 6-letter word. Petrels are small to medium-sized seabirds that typically have long wings and short legs. They are found in all oceans and are known for their long-distance migrations. Petrels feed on fish, squid, and other marine life, and they often nest in burrows or crevices in cliffs.