01 Myosotella myosotis 6.2 mm high. Same specimen in air (left) and in water (right). Salting on tidal River Dee, Flintshire, Wales. December 2018.

01 Myosotella myosotis 6.2 mm high. Same specimen in air (left) and in water (right). Salting on tidal River Dee, Flintshire, Wales. December 2018.

When in water, the body is more swollen, and both shell and body are more translucent, lighter and brighter in colour, and less reflective, than when in air.