5 /5 Divya Tatiraju: Our group thoroughly enjoyed the Glass-bottom boat tour at the Meadows center. Our tour guide Olivia was excellent and in the 30 mins we had for the tour, we learned so much about the habitat and some of the history behind it. While on the boat, you can see depths ranging from a few feet, and all the way till the deepest part which is 27 feet. The water is crystal clear and you can see many fish and turtles. You can also see cormorants and herons at the banks and turtles sunning themselves. The boardwalk walk was also great, and we spotted many large bass fish and gar. Overall, a must-see while in San Marcos. If youre going as a large group, consider the private tour.