When he’s not looking for nudibranchs, Cobb is often hiking or rock climbing. Michael Aw Cobb dives into the river near a small park called La Balsa, on the lower-left side of this photo.

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 ...

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 ...