the.com/gills
the original breathing apparatus, extracting oxygen from water like it's nothing
means The respiratory organs of fish and many aquatic creatures, which pull dissolved oxygen out of water as it flows across them.
from From Middle English 'gile' or 'gille,' likely borrowed from a Scandinavian source — compare Old Norse-related words for the jaw or cheek. The word may share deep roots with terms for the throat and mouth, fitting for the part of a fish that sits just behind the head and gulps the water in.
- human echo
- Embryos briefly form gill-like arches before becoming jaws and ears
- efficiency
- Fish gills extract up to 80% of water's oxygen
- countercurrent
- Blood flows opposite to water for maximum oxygen grab
- fungi too
- Mushroom gills make spores, not breath
- crab trick
- Some crabs keep gills wet to breathe on land
lake superior — the largest freshwater lake by surface area at 31,700 square miles, with fish species like lake trout and whitefish using gills to breathe
great barrier reef — stretches 1,429 miles off australia with millions of fish species equipped with gills, from clownfish to groupers
amazon river — home to over 3,000 fish species with gills including piranhas, arapaimas, and electric eels in south america