The term 'swimming apparatus' can refer to a variety of items used for swimming, such as snorkels. A snorkel is a tube-like device that allows a swimmer to breathe while their face is submerged in water. It is typically made of plastic or rubber and has a mouthpiece at one end and a curved tube at the other. Snorkels are used by swimmers, divers, and snorkelers to explore underwater environments without having to come up for air.