Which factor is NOT typically monitored with dive computers?

The correct answer is coral health because dive computers are primarily designed to monitor factors that directly affect a diver's safety and dive profile. Specifically, dive computers track dive time, depth, and water pressure to help divers avoid potential risks such as decompression sickness. These tools are equipped with algorithms that inform divers of their no-decompression limits, ascent rates, and other critical parameters based on the current conditions of their dive.

Coral health, on the other hand, is unrelated to the physiological data and safety calculations that dive computers provide. While divers may have an interest in the health of coral ecosystems for conservation and educational purposes, it does not play a role in the functional capabilities of dive computers or the immediate safety of underwater diving activities. Therefore, monitoring coral health falls outside the purview of what dive computers are designed to assess.