A seaplane, or a hydroplane is a type of aviation transportation. A seaplane is different from a regular aircraft, as it has the ability to take off, land and float on water. Seaplanes are therefore built with boatlike hulls that allow them to float on the surface of the water, and take off when needed.
The first seaplane was constructed in 1876, but later sank, and so later, modern versions of the seaplane have been utilized since the early 1900s, and are still often in use today. However, their popularity somewhat dropped off after the Second World War. They are now instead sometimes used to transport between islands across the Caribbean Sea.
That being said, seaplanes are still used for remote locations such as the Canadian or Alaskan wilderness, where there may be many lakes available for landing and takeoff. These types of seaplanes often work on a charter or scheduled basis, or may be flown by local residents for personal use.