Sea Monster and St. Brendan

"St Brendan's ship on the back of a whale, and his men praying, in Honorius Philoponus, 'Nova typis transacta navigatio' (Linz: s.n., 1621), p.12 (British Library, G.7237)."

I love maps. I love monsters. What's not to love in this monster that is so large one might think he is an island? So large in fact that there is room for St. Brendan and his men to set up an impromptu mass?

This and many more sea-faring monsters may be seen at BibliOdyssey's post Map Monsters.