Swim bladder helps maintain buoyancy: ray-finned fish

Swim bladders of fish at depth help maintain buoyancy by regulating gas levels.

Biomimicry Taxonomy

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	Buoyancy

Biomimetic Application Ideas

Keeping oxygen out of OLED's for solar cells. Keeping food fresh by keeping oxygen out (coffee beans, tea).

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[Collapse all sections] Summary

"But the swimbladder must be filled from dissolved gases in the blood, and it must not lose gas through redissolution into the blood. So secretion of gas from blood into swimbladder faces a big barrier, and swimbladder gas will all too readily go into solution in the fish's blood and thence out into the ocean. Two devices stand in the way. First, a layer in the swimbladder wall provides a very effective barrier to the passage of oxygen (Lapennas and Schmidt-Nielsen 1977). Second, blood leaving the so-called gas gland in the wall of the swimbladder passes through an exchanger (fig.5.2) in which blood leaving the swimbladder loses excess dissolved gas specifically to blood moving toward the swimbladder (Scholander 1954)." (Vogel 2003: 99-100)

About the inspiring organism

Actinopterygii
Actinopterygii

Organism/taxonomy data provided by:
Species 2000 & ITIS Catalogue of Life: 2008 Annual Checklist

Bioinspired products and application ideas

Application Ideas: Keeping oxygen out of OLED's for solar cells. Keeping food fresh by keeping oxygen out (coffee beans, tea).

Industrial Sector(s) interested in this strategy: Electronics, Food

References

Steven Vogel. 2003. Comparative Biomechanics: Life's Physical World. Princeton: Princeton University Press. 580 p.

Swim bladder helps maintain buoyancy: ray-finned fish

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