The Seawind is most distinctive for its engine pod, which juts forward from the leading edge of the very large vertical fin.

The single central float was wide and stretched aft to below the leading edge of the fin.

Oscillating fins create thrust when a starting vortex is shed from the trailing edge of the fin.

She pulled herself up and over the edge of the fin then stopped, pointing to Enge.

Part of it went upwards perforating the leading edge of the fin in several places.

The leading edge of the fin is formed from an extended diagonal fuselage member, with a vertical piece behind to support the rudder.

Dominant males are bluish-green in color and show a black bar along the distal edge of the caudal fin.

The lower edge of the caudal fin can be white in color with all of the other fins lacking pigment.

The pelvic fins are shining violet, as is the leading edge of the anal fin.

A long tailskid reached rearwards from the forward edge of the ventral fin.