What types of animals will we need to identify in the study mentioned?

Identifying both adults and juveniles of a species provides a more comprehensive understanding of the population dynamics and health of aquatic ecosystems. Each life stage can play a different role in the ecosystem; for example, juveniles may be critical for assessing the reproductive success and recruitment rates of a species, which are vital for understanding fishery sustainability.

Moreover, adults and juveniles may exhibit differing behaviors, habitats, and responses to environmental changes. Studying both stages allows researchers to obtain valuable data on growth patterns, survival rates, and habitat usage, which are essential for conservation and management strategies.

In contrast, focusing on only adults would miss critical information about the younger generations and their potential impact on the population, while excluding juveniles would overlook important life cycle stages that influence the overall health of the aquatic community. Limiting the study to only aquatic mammals would also narrow the scope unnecessarily, as the aim is to understand a broader array of aquatic life and their interactions within their environment.