I am yet to encounter a monter more stronger then Sea Horror *shudder*
first met it when I was level 8 while having a little explore (ages ago)
I was like, wow, a Pugil.... a BST hits it for around 200 and something.
then this wierd octopus/stingray thing appears, I am like... wow it looks purdy, I examine it, and its actually over the rank of being over impossible.
and yeah, died. got raised by a japanese player, and started watching as a team of people taked it down , then started running around with excitement, then got dizzy and the ship arrived in Mhaura.
I went back to Selbina (hours later), and the Sea Horror was inside this time, I got killed, went to my home point at Bastok, happy times ^_^
just the creation of some of these monsters is amazing *_*