You get the submarine ticket at the Pub on your second visit to Loch Ness.
On the first visit, beating the player at darts gets you the rowboat ticket, but when you return the photo to Mews, it turns out to be less than convincing.
When you return to Loch Ness, play the other player to get a submarine ticket, and dive to photograph a likely sea creature on the bottom of the Loch. Return to the Pub with the underwater photo.
There does not seem to be a horn on Cryptids Island. There is a flute (a pennywhistle) which you receive after the submarine ride, after you defeat the sore loser at darts again.
If you use the sub, I think you will find/see? Nessie.
first you have to ride the boat then go to the pub then you ask the guy in the blue then you will get it.
When you have the submarine ticket, click on the sub (enter) and he will ask for your ticket.
The Pub is to the right of the loch at Loch Ness. You will play darts there to win the tickets to the rowboat and submarine.
You win at darts a second time and get a submarine ticket.
Go on the submarine. You have a ticket. Dive to the bottom and then go left to see a Nessie face in the darkness. Take a photo and go back to the pub with it.
On the submarine tour, dive to the bottom and you can photograph a colorful "Nessie" head. But when you take it back to the Pub, it turns out to be a picture of a movie prop.
He is not on Cryptids Island. He is on Counterfeit Island.
there are no tickets on cryptids island try counterfit island
You cannot buy or get chocolate on Cryptids Island.
Dive to the bottom and go left, and there is a colorful Nessie head. Take the photo back to the pub.