1. If an octopus loses ___ arm it grows back again.
2. ___ over 200 species of octopuses and all of them live in oceans around the world.
3.Octopuses ___eggs (up to 150 000 in a week)
4.They have 3 hearts and their blood is blue ___.
5.To protect ___, they change colour (in just three-tenths of a second) and shape and shoot ink.