No. 16Marine · Wildlife compendium
Dolphin
A pod of dolphins swims in the open sea in the first trailer, seen from the air next to a small boat. Rockstar has not included it among the species it names and its area is unknown.
Where it has been seen
Not seen in any area yet. The six will light up as sightings come in.
When it appears
No times yet: they arrive with the first in-game sightings, from 19 November.
Sightings
RockstarTrailer 1 · 0:12Official
✓ Checked against the video
No player sightings yet: the game comes out on 19 November.