Koopa Beach 1 is the first course of the Star Cup in Super Mario Kart. It was subsequently reused in Mario Kart: Super Circuit as the third track in the Extra Lightning Cup. It is set on a series of sandbanks in the middle of a blue sea.
It is a very short course, and takes place on a set of small islands. Its hazards consist of Cheep-Cheeps and green 'rough' sections of the beach which slow karts down. Karts can drive through the light-blue shallow water, which will slow them down a bit, but will sink if they go into the deep dark-blue water.
There is an extra ? Panel a bit off the track, which is quite easy to reach.
Mario Kart: Super Circuit
The course re-appeared in Mario Kart: Super Circuit, and is the third track in the Extra Lightning Cup. It uses the background from Shy Guy Beach, including the pirate ship. The Cheep Cheeps and jump pads were removed, as were the Item Boxes on the right side of the second-to-last island.