Globe Staff illustration/istockphoto

The New England Aquarium's new high-def TV spots highlight the new tank.

The ads are the first time the aquarium has gone on TV to promote itself since the 1970s.

Extreme details are captured with high-speed cameras.

David L. Ryan/ Globe Staff

The aquarium's new 200,000-gallon tank, as seen from above.

Brian Skerry

The aquarium's new tank, as seen from below.