From BluWiki

Cetaceans have a limited form of the Discriminatory Hearing advantage (page 49) wherein the bonus are limited in use and to water only. The limitation does not afect the ability to memorize sounds. The modified advantage has a cost of ten (10) points.

Build

This is combination of two traits.

• Discriminatory Hearing (Hearing and Shadowing bonuses only, -15%; Underwater only, -30%; 9 points)
• Sound Memorization (quirk; 1 point)

Effects

When they are submerged, cetaceans gain a +4 bonus to any task involving hearing and to the Shadowing skill versus a noisy target. They can also memorize any sounds they have heard for at least one minute by making a successful IQ roll, this ability works in and out of the water.