What are common signs of deterioration in a wreck?

The signs of deterioration in a wreck primarily include structural instability and rust. As a wreck ages, environmental factors such as water pressure, salinity, and biological activity can lead to the breakdown of its materials. Structural instability might manifest as visible corrosion, buckling, warping, or other forms of physical weakening. Rust is particularly indicative of iron or steel materials that have corroded due to prolonged exposure to water, especially in saltwater environments. These factors suggest that the wreck is deteriorating and could pose hazards to divers exploring the site.

In contrast, vibrant colors and thriving ecosystems generally indicate a healthy marine environment. While excessive algae growth might suggest some level of nutrient imbalance or decay, it is not a direct indicator of the wreck's structural integrity. The presence of divers does not contribute to the assessment of the wreck's condition and can vary greatly without implying deterioration. Understanding these signs is crucial for wreck divers to ensure safety and contribute to the conservation of underwater heritage.