Final answer:
Coastal aquatic habitat fragmentation can be caused by factors such as coastal development, bottom trawl fishing, and overfishing.
Step-by-step explanation:
Habitat fragmentation occurs when a natural habitat is altered and reduced in size, leaving fragmented pieces of the original habitat. Coastal aquatic habitat fragmentation can be caused by various factors. One cause is coastal development, such as the construction of roads and buildings, which can disrupt the natural flow of water and result in the loss or isolation of aquatic habitats. Another cause is bottom trawl fishing, which destroys the seafloor and degrades the habitat complexity. Additionally, overfishing can lead to the loss of biodiversity and destruction of aquatic habitats.