I like it, but there's a SCP-XXXX at the start of the table there.
I like it. It's a big weird animal that's dangerous but not excessively dangerous, and it has internally-consistent, believable animal behaviour.
Piffy is an SCP Foundation Moderator, Lv. 9001 Squishy Wizard, and Knight of the Red Pen.
I like this as well, though "is to be" is used too many times at the beginning for my taste.
Definitely needs a read through for some small tone/spelling mistakes but it's a good enough idea to merit a +1
It is currently unknown how it decides to change 'shells.'
Every ██ years, SCP-1568 will leave its current 'shell' and search for another boat.
The shell, no matter what size, is too small for it, but it will still move into a slightly bigger shell, and we don't know how it decides to change them, despite a certain time period passing each time.