Blood Blister: If you are sure it's a blood blister: thinning of a blood vessel wall could cause ballooning when the pressure goes up, then collapse when the pressure goes back down. The concern is if this blister doesn't resolve and gets cut, getting it to stop bleeding could be difficult.
This is an old British riddle from 1300-1900 AD. What is the longest and yet shortest thing in the world, The swiftest and yet the slowest, the most divisible and the most extended, The least valued and the most regretted, without which nothing can be done, Which devours everything, however small, and yet opens the life and spirit.
We hear a lot about the fastest things on Earth, the peregrine falcons, sailfish and cheetahs of this world. But what are the slowest? Earth Unpluggedâs Maddie Moate discovers that animals that live life in the slow lane, like tortoises, sloths and garden snails, are the masters of survival. But they are positively speedy; there are much slower things to be found on our planet. For more videos subscribe to the Earth Unplugged channel on YouTube.