Mushroom Forest is situated at Playa Santa Cruz. From Playa Kalki it is about 15 minutes by car. Keep in mind to go back along the south coast of the island so you finish the round through the western part of Curacao.
You can park the car at Santa Cruz at the left side along the trees. Don't leave your valuables in the car and get ready for the dive right there. Before you start, check if Captain Goodlife is there and if he has a spot to dropo you off on the dive spot. He will drop you and pick you up an hour later.
Mushroom Forest is a plateau at 10 to 14 meters depth. It is crowded with boulder star corals that are shaped like mushrooms. You will see big green morays, very big porcupine fish, spiny lobster and there's always a chance in seeing a green sea turtle.