I also took a snorkeling trip to Coco/Felicite Islands. Coco Island is beautiful & it is likely that you'll see a turtle or two near Felicite Island. There are likely to be a number of colorful tropical fish [better visibility at Felicite I think], maybe even a shark. But if you are going to see coral reefs, you will be heartbroken - the reefs are so badly damaged [crushed and mostly dead or dying]. It's a quick & fun boat ride -- a bit pricey, but it's the Seychelles.
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