What is a typical characteristic of outdoor pools and lidos?

A typical characteristic of outdoor pools and lidos is that they are often large and deep. Outdoor pools and lidos are designed to accommodate a variety of swimming activities, including recreational swimming, diving, and sometimes competitive events. As a result, they tend to have larger dimensions and deeper sections to cater to these various uses.

Heated pools are more commonly found in indoor settings or certain outdoor facilities, but not all outdoor pools are heated, making that option less applicable. While some outdoor pools may have shallow areas for children and less experienced swimmers, they are not exclusively shallow, highlighting the diversity in design. Indoor pools inherently cannot qualify as lidos, which are specifically open-air swimming venues. Therefore, "large and deep" accurately describes the typical attributes of outdoor pools and lidos, which serve a broader community function.