What part of speech is diving?

"Diving" can be several parts of speech depending on how it's used in a sentence:

* Verb: When describing the action of going underwater, e.g., "The dolphin is diving for fish."

* Gerund: When used as a noun representing the action, e.g., "Diving is a fun activity."

* Adjective: Describing something related to diving, e.g., "She bought a diving suit."

To determine the correct part of speech, you need to look at how it's used within a sentence.