SPELL_SENSE_UNDEROCEAN

Usage       : cast sense underocean
Accumulative: No
Duration    : Instantaneous
Level       : Level 21 mage & cleric
Mana Usage  : 40

This spell allows the caster to see a visual representation of the whole
world and the current underocean lifeform activity.

It shows the size (in feet) of the critters being made there now.

See also:  UNDEROCEAN OCEANLIFE