My wife & I have been on numerous eco excursions, on both land & water. there are 3 river cruise ships in Chattanooga. However, only the BLUE MOON is focused on wildlife which is why Tish Gailmark, naturalist at the Arboretum & Nature Center recommended the Blue Moon. This is because of Capt'n Dave's knowledge.
We've listened to David Haggard, west Tn naturalist at Reelfoot Lake State Park, 3 times & Doris Maggard twice. Both do wildlife talks & tours with live raptors in hand. We were very impressed not only with Capt'n Dave's knowledge of Chattanooga history but also of his wildlife knowledge. He navigated not down the center of the river but within 50' of shore to get a closer look at numerous turtles & great blue herons. plus the highlights were 2 cormorants (a diving, fish catching, odd duck looking bird) & an immature bald eagle.
The delicious smoked BBQ lunch was outstanding & was only missing baked beans.
If you're looking for a speed boat Disney ride, like the Tn Aquarium Explorer, then the Blue Moon isn't for you. But if you are looking for great wildlife viewing then you've found the right boat in Chattanooga.