Harbor Seal

A harbor seal can hold its breath for 30 minutes.

A harbor seal can use its whiskers to sense vibrations as a precise sense at the listed range, but only underwater.

40 feet. Requirements The monster is hiding in water and a creature that hasn't detected it is within the listed number of feet. Effect The monster moves up to its swim Speed + 10 feet toward the triggering creature, traveling on water and on land. Once the creature is in reach, the monster makes a Strike against it. The creature is Off-Guard against this Strike.

Requirements The harbor seal has a Medium or smaller creature Grabbed in its jaws

The harbor seal Swims up to 10 feet, carrying its grabbed creature along with it dealing 1d8 slashing damage (DC 18 fortitude save).

Requirements The monster's last action was a successful Strike that lists Grab in its damage entry, or the monster has a creature Grabbed or Restrained Effect If used after a Strike, the monster attempts to Grapple the creature using the body part it attacked with. This attempt neither applies nor counts toward the creature's multiple attack penalty. The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.