|Abilities||Levitation, Telekinesis, Time-travel|
|Appearances||Ecco: The Tides of Time|
They have the ability to hold helium within their bodies to allow 'flight' and telekinetically levitate items. Some individuals such as Trellia are noted to have time-travelling power as well. They are seen in Ecco: The Tides of Time.
Skyfins have longer torsos than the dolphins of Ecco's time as well as featuring extended fins, presumably to aid in flight.
They have the ability to carry objects and even other sea creatures telekinetically. As Trellia is the only one who time travels, it is unknown if the entire species also has this ability.
Their ability of flight is possibly related to the Skyway, which connects the oceans in their time.