Aquatic is the underwater language of the Seawings that include sign language and stripe flashes. Seawings use this to talk to other Seawings when underwater and unable to talk.
- Making a circle with index claw - "Not yet, we'll finish this later."
- Three flashes of largest tail stripe - "Squid-brain."
- Snout stripes - Questions (who, what, where, when, why, or how).
- Smallest stripe under the wing - "Silence!"