Also, there were other survivors in the ship with tadpoles (not companions), they were brought away by a female Elf controlling them (you have to talk to the dead fishermen to find that out).
The synopsis for that dialog says that it's about mindflayer illusion
You speak with the dead soul of a fisherman, who hurried to the crash site when he saw your ship fall from the sky. At the site he saw a mindflayer, disguised as a beautiful woman, and was killed by Intellect Devourers (brains)
