It's very interesting to me that there are only a few elves on the island. That Kabru was able to narrow it down to Laios' team when they got "mugged", I mean. Was it ever explained in the world bible why elves don't really explore dungeons? By the existence of Canaries, you'd think they'd want to be involved from the beginning.
I'm also curious why the two known elves to the island adventurer community are both half-elves. (Especially when Fionil was sent by the canaries.) Part of me wonder if elven superiority makes pure elves not want to mingle with other races, so half-elves are tasked with the more "dirty" jobs... Marcille being a half elf was very apparent to almost all the elves (except Pattadol) (and they made fun of her for ever thinking she could "pass" as a pure blood) but most adventurers don't seem to see elves enough to know the difference.
Elves have a way smaller population so it makes sense that there's less elves overall. It's also said that most of them live in the central continent while the story happens in the eastern continent, It's a not specially notorious new dungeon on a tiny island on the coast of dwarven territory. They might explore them if they exist closer to their territory?
About Fionil I wonder if her being a half-elf was just a retcon? Cause she had round ears like marcille and showed up right away and nobody acted like it was weird there was an elf there lol. I wonder if the elf scarcity was decided after her introduction and the pointier ears too.
But I guess it would make sense that they don't really want to mingle with other races, since they mostly stay in the same continent where its 80% elves.