In a single quote from the combat reports (about 15 seconds after embarking): "The skeletal carp stands up"
I usually embarked in wilderness or untamed wilds, but this time I wanted a little more challenge... so off to a haunted stream it is. This may have been a mistake. I took some silver war hammers and dwarves trained to use them and also a woodcutter/axedwarf and 10 war dogs, but that didn't help much at all.
The wagon materialized right next to the river with a horde of skeletal carp which promptly walked out of the river (how,
exactly?) and ate 2 war dogs before my improvised military even managed to pick up their weapons.
The final death count of the first minute:
12 assorted undead fish (mostly skarp)
1 skeletal doe rabbit (fierce little bugger tore the woodcutter's face off before being hacked in two)
3 war dogs
1 weaponsmith/hammerdwarf (fell into the river)
1 expedition leader/cook (as above)
1 woodcutter's face. But it healed while he walked back to the camp. I'll keep an eye on that guy.
I already love this embark, though my dwarves may have a different opinion