Final answer:
In the upper intertidal zone of a rocky shoreline, you are likely to find organisms like sea stars, sea urchins, and mussel shells, adapted to dry conditions and wave impact.
Step-by-step explanation:
The upper intertidal zone of a rocky shoreline is a unique and variable environment where organisms are adapted to both dry conditions and the impact of waves. Organisms you would most likely find in this area include sea stars, sea urchins, and mussel shells, which are adapted to withstand long periods of desiccation and the physical impact of waves. These species have various adaptive features, such as tough exoskeletons or shells, which provide protection against drying out and the wave action characteristic of the intertidal zone.