Namorita

Namorita is an Atlantean like Namor.

When Silver Surfer was "surfing" across the sky, she leaped out of the water along with some dolphins when he passed.

Background
Namorita was an unnamed and unvoiced cameo.

This is currently the last animated version.

In the Comics
Is Namor's cousin.

Was a member of the Defenders and Fantastic Four.