Special Operations Forces Center. 1  Fleet Week Jump with the Navy Leapfrogs Experience the Navy Leapfrogs' spectacular Fleet Week jump over San Francisco alongside the team, thanks to a handy helmet cam. Profile: 353d Special Operations Group The 353rd Special Operations Group is the focal point for all U.S. Air Force special operations in the U.S. Pacific theater.
Animals which Breathe through their Skin. Some animals which live on land have a skin which is so thin that gases can easily pass through it. We say that they have a permeable skin. Earthworms and amphibians have a skin which is permeable to gases. Amphibians also have a pair of simple lungs but they are not sufficient on their own for breathing. Large animals which breathe through their skin also use blood to transport oxygen to their tissues and to bring carbon dioxide to the surface of the body.
Amphibian Adaptations. For amphibians, limbs and lungs were two of the most important adaptations as the former helped them move around without having to depend on the buoyancy of water, and latter replaced the gills to facilitate respiration.volution of Amphibians. Amphibians were the first vertebrates to adapt to the terrestrial life; something which occurred somewhere around 400-360 million years ago. The first major group of amphibians to evolve on the planet was armed with fins-which were quite similar to legs that helped them crawl out of the water.