0660: #65 solved, and Lorick #66 My pursuit of the monster is logical

Lorick #65:

My pursuit of the monster is logical

and my logic is monomaniacal

broke in body and mind

by the white one of its kind

next to whom I am naught but a barnacle!

But first, we solve #66 - here it is one last time:

I'm a mystery under the blue

the key to me lock known to few

highlanders roam

near my watery home

if a monster - that judgement's on you!