To sum up, these activities each offer unique experiences and benefits. No matter which one you choose, you can enjoy the beauty of the underwater world. snorkelling(英式拼法) :浮潛 ex. Snorkelling is easy and suitable for beginners. freediving 自由潛水 ex. Freediving requires good breath-holding skills scuba diving 水肺潛水 ex. Scuba diving allows you to stay underwater longer. ultimately 最終;歸根結底 ex. Ultimately, the choice depends on your interests. distinctive 有特色的;與眾不同的 ex. Each activity has its own distinctive features. personal fulfilment 個人成就感;自我滿足 ex. Learning new skills can bring personal fulfilment. 完整文章: https://www.abyss.com.au/blog/diving/scuba-freediving-and-snorkeling-the-difference