Nudibranchs, commonly known as sea slugs ... Instead of taking everything it can get, the slug only stores the larger of the two main types of nematocyst made by their buoyant prey. This is probably ...

To cross-stitch your nudibranch, you need to make a small cross of embroidery ... are of the same colour on the pattern in a given direction. To make a cross, sew two stitches of thread diagonally ...