Indeed. He is a spider but not. Which is a bit confusing, but dealing with strange things is par for the course.
And yet you've still not said as much. So are you merely playing coy or is this a new game that I am not familiar with yet?
Oh the Realm of Monsters is a terrifyingly amazing place where only the strongest survive and thrive for very long. Plus with the ocean above it's easy to lure all manner of fish right down into my lair.