Nudibranch is just a fancy word for a sea slug ... it's the babies that are particularly tiny. The smallest of all marsupials, the long-tailed planigale is endemic to northern Australia.

To cross-stitch your nudibranch, you need to make a small cross of embroidery thread to match every coloured square on the pattern. Choose a square roughly in the middle of the nudibranch pattern and ...

Like many other nudibranchs, the sea swallow harnesses the venom of its prey. But this small slug will also take on colonies of floating cnidarians. This includes the Portuguese man-o-war, an open-sea ...