What was Nick hoping to see on the field trip?

Nick was hoping to see a panther on the field trip, which highlights his interest in rare and intriguing wildlife. Panthers are often associated with mystery and excitement due to their elusive nature and the fact that they are not commonly spotted in many areas. This desire to see a panther suggests an appreciation for wildlife that is not only significant in local ecosystems but also captivating to the imagination. The appeal of encountering such a majestic animal can significantly enhance a field trip experience, making it memorable and educational.

On the other hand, while crocodiles, bears, and herons are also remarkable animals, they may not hold the same level of fascination for Nick, given the context of the question. Each of these animals has its own set of characteristics and habitats, but the panther stands out as an emblem of excitement in wildlife observation. The specificity of Nick's interest suggests an anticipation of not just any encounter with wildlife, but a unique one that aligns with the allure of the panther.