Identify the most direct indicator of 'Fasad' (corruption/destruction) resulting from a specific fishing activity within a marine ecosystem, beyond mere resource depletion.

The specific fishing activity leading to the most direct indicator of 'Fasad' (corruption/destruction) beyond mere resource depletion is bottom trawling. Bottom trawling involves dragging heavy, weighted nets along the seafloor to catch target species like fish and shellfish. The most direct indicator of 'Fasad' resulting from this activity is the widespread, systematic physical destruction and flattening of complex benthic (seafloor) habitats. Benthic habitats are the diverse structures and environments on the ocean floor, such as cold-water coral reefs, sponge beds, and structured sediment environments, which provide essential shelter, nurseries, and feeding grounds for a vast array of marine life, many of which are not commercially targeted species. This physical destruction signifies 'Fasad' because it directly corrupts and dismantles the foundational structure and ecological integrity of the marine ecosystem itself. Unlike resource depletion, which primarily refers to the reduction in the abundance of specific fish populations, the widespread annihilation of benthic habitats eliminates the very capacity of the ecosystem to support its natural biodiversity, complex food webs, and fundamental ecological processes. This leads to a profound, long-term alteration of the ecosystem's function and significantly diminishes its resilience and ability to regenerate naturally, representing a systemic breakdown of ecological order.