Embark on a day trip to Rottnest Island, a picturesque island located just off the coast of Perth. Start your day by renting a bike and exploring the island's stunning beaches, including the famous Pinky Beach and The Basin. Take a dip in the turquoise waters or go snorkeling to discover the vibrant marine life. Don't forget to take a selfie with the adorable quokkas, the island's friendly marsupials. Enjoy a picnic lunch overlooking the stunning coastline before taking a leisurely walk to the Wadjemup Lighthouse for panoramic views. Catch the ferry back to Perth in the evening.