Los delfines:

Diosdado: the brown-haired one in the back, his main ship is Fer.

Fer Jalil: has dyed hair, dressed in white, his main ship is Diosdado

Shaula: Brown-haired, next to Bans, her main ship is Bans

SoyBans: Next to Shaula, black-haired, his main ship is Shaula

Bastian: The one taking the selfie, doesn't have any main ships

Mariana: Pelimarrona, next to Shaula and Banz, has no main ships