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| Marine habitats |
|---|
| Coastal habitats |
| Ocean surface |
| Open ocean |
| Sea floor |
Marine botany is the study of flowering vascular plant species and marine algae that live in shallow seawater of the open ocean and the littoral zone, along shorelines of the intertidal zone, coastal wetlands, and low-salinity brackish water of estuaries.
It is a branch of marine biology and botany.