Device Pin Project Part 5

Today we learn that otters are also problematic. Luckily for me, they aren't exactly a common heraldic animal.

Azure, a chevron throughout between three needles bendwise sinister argent.

Per pale purpure and vert, on a chief argent a raven displayed sable.

Per fess Or and vert, in pale a brown otter statant proper and an open book Or.