Final answer:
The major archaeological problem with waterlogged finds, particularly those made out of wood, is degradation and decay.
Step-by-step explanation:
Waterlogged finds, especially those made out of wood, pose a major archaeological problem due to degradation and decay.
When organic artifacts are exposed to the air after being sealed away for centuries, they degrade rapidly. This is why ancient organic collections, such as wooden canoes or human remains, may need to be chemically stabilized or permanently frozen to prevent decay.
Proper storage and control of temperature and moisture levels are essential for preserving waterlogged finds and preventing further degradation.