They allow sunlight to reach the benthos to power photosynthesis.
Estuaries
Smal ones..
In shallow, slow moving rivers, estuaries, saltwater bays, canals and costal areas
Estuaries are important nurseries for many species of fish, crustaceans, and shellfish. These organisms rely on the shallow, nutrient-rich waters of estuaries for protection from predators, access to food, and optimal conditions for growth and development before moving to deeper waters as adults.
The common snapping turtle is a freshwater species of amphibian. Typically, these turtles dwell in areas like shallow ponds, shallow lakes, streams and rarely estuaries.
Seahorses can be found in shallow tropical and temperate waters around the world. They shelter in sea grass beds, coral reefs, estuaries, or mangroves.
What is happening to estuaries?
Commercial fishing boats often operate close to shorelines in relatively shallow waters because these areas are rich in marine life due to nutrient upwelling and the presence of habitats like reefs, estuaries, and mangroves. Shallow waters also allow for easier access to fish species that inhabit these regions, making it more efficient for fishermen. Additionally, fishing near shore reduces fuel costs and enhances safety, as boats can quickly return to port if needed.
The three types of estuaries are coastal plain estuaries, bar-built estuaries, and tectonic estuaries. Coastal plain estuaries form when sea levels rise, flooding existing river valleys. Bar-built estuaries are separated from the ocean by sandbars or barrier islands. Tectonic estuaries result from land movement, such as faults or folding, creating a depression that fills with water.
There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.There are many estuaries in Ireland. The Shannon Estuary is the largest.
Estuaries are partially enclosed bodies of water where ocean salt water and fresh water mix. Estuaries vary in salt content. When tides rise, their salinity rises. When the tide falls, the estuary has a lower salinity. Some estuaries are protected and are not affected as much as others.
Estuaries are the most productive of all marine ecosystems.