Explian how the antennae could help the sand crab survive in it environment

Answer and Explanation:

Sand crabs are known by this name mainly because they spend an important part of their lives buried below the sand. As other crustaceans, they are characterized by the possession of antennae, a structure that has several important roles in their behaviour and physiology.

For instance, they are an important feature in their feeding behaviour. When a sand crab feeds, it begins by showing only its eyes and first pair of antennae. However, as ocean waves recede, they show a second pair of antennae that serves to filter the microcrustaceans and phytoplankton - their main food source. This enables the crab to gather food and survive in this tough environment.

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