= Substrate (marine biology)
{wiki=Substrate_(marine_biology)}
In marine biology, "substrate" refers to the surface or material on or in which organisms live, grow, and obtain their nutrients. This can include a variety of types of surfaces, such as: 1. **Natural substrates**: These can be sandy, rocky, muddy, or even organic materials like decaying plant matter. The characteristics of these natural substrates can greatly influence the types of organisms that can thrive in a particular habitat.
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