Question

Ответьте пожалуйста:) Почему раки, являясь водными животными, могут долго находиться на суше?

Answer 1

У них под панцирем есть пузырьки с воздухом

Answer 2

Why Can Crabs, Being Aquatic Animals, Stay on Land for a Long Time?

Crabs, being aquatic animals, can stay on land for a long time due to several reasons:

1. Respiratory Adaptations: - Crabs have gills that are adapted to retain moisture and allow them to breathe on land for extended periods. - The gills are covered by a specialized chamber that helps retain moisture and prevents desiccation.

2. Ability to Retain Moisture: - Crabs have the ability to retain moisture in their gills and body, allowing them to survive out of water for prolonged periods. - This adaptation helps them avoid dehydration and maintain their physiological functions while on land.

3. Behavioral Adaptations: - Crabs exhibit behavioral adaptations such as seeking shelter in damp areas or digging burrows to stay moist and avoid desiccation. - These behaviors enable them to regulate their moisture levels and survive in terrestrial environments for extended periods.

4. Physiological Flexibility: - Some crab species have the ability to switch between aerobic and anaerobic respiration, allowing them to survive in oxygen-deprived environments, such as when out of water.

In summary, crabs can stay on land for extended periods due to their respiratory adaptations, ability to retain moisture, behavioral strategies, and physiological flexibility. These factors enable them to thrive in both aquatic and terrestrial environments.