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Among aquatic, water-breathing animals, gills and other continuous-flow breathing methods dominate over lungs and other storage-based breathing methods as in land animals. Notably, axlotls have gill-like structures around their heads which use a high surface-area structure heavily vascularized with capillaries to breathe water.

However, it seems all air-breathing organisms use storage-based breathing, air-breathing fish included, as lungfish use their swim bladders as lungs, a clear example of storage-based breathing.

Are there any land organisms that use continuous-flow breathing methods over lungs?

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Terrestrial crustaceans are land animals that use gills (or gill-like structures) for gas exchange, though these gills must be kept moist for efficient respiration.

Specifically, animals like hermit crabs have a branchiostegal lung that looks like gill tissue but is better adapted for absorption of oxygen from air instead of water.

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