Maple samara in flight. Maple samaras fly with one wing In late April, the ground becomes littered with samaras, the winged seeds of maple trees. With the right wind, the single-winged "whirlybirds" can carry the tree's embryos more than a mile.
MICROSCOPIC HAIRS IN INNER EAR: Inner ear help divers know their up down orientation in water. Sounds under water are magnified. When we hear sounds (whether under water or above) microscopic hairs in our inner ears vibrate.