Covert.stealth.underwater is the skill used when sneaking underwater.
Sneaking
When sneaking, this skill is checked against anyone in the room's adventuring.perception to determine whether they saw you move or not. It does not determine their ability to actually see you in the room, however, as this is decided by covert.hiding.person.
Inhume
This skill is used by the Ninja when using a chop inhume and is tested against the other victim's adventuring.perception, if for some reason they happen to be inhuming someone underwater.
Catching Fish
This skill determines if potential anglers are noticed by the blowfish in the pond in the ninja guild.
Primary
No groups have this skill as a primary.
TM opportunities
0-50 bonus
51-100 bonus
101-150 bonus
151-200 bonus
201-250 bonus