One cool thing about the Leedsichthys is that you can scrape its fish multiple times at once, just scrape it once, swim out of its range until u dont see it anymore and then swim back to scrape it again. This way u dont have to wait 10 minutes between scraping. Up so the newbies can see (Sorry for my bad English)

If these thing are tameable then they are just a underwater tank which will wreck enemy raft base

A titan of the sea if its tameable whos agree