Dolphins “play” both in the ocean and, in a more sports-fan sense, as the NFL team called the Miami Dolphins.

Wild dolphins

Wild dolphins are most often found playing in:

  • Coastal and offshore oceans in warm and temperate waters around the world, where they surf waves, leap, and socialize.
  • Sheltered bays and inlets , which many species use for resting and social activity during the day, such as spinner dolphins using bays off Hawai‘i.

Miami Dolphins (NFL team)

If the question is about “where do the Dolphins play” as in the football team:

  • The Miami Dolphins are an NFL team based in the Miami metropolitan area.
  • They play their home games at Hard Rock Stadium in Miami Gardens, Florida, a large multi‑purpose venue that has hosted many major sports events.

Quick scoop style recap

  • Wild dolphins play in oceans and bays, especially in warm coastal regions.
  • The Miami Dolphins play home games at Hard Rock Stadium in Miami Gardens, Florida.

Information gathered from public forums or data available on the internet and portrayed here.