Take up to 4 of the following submersible actions, in any combination and order. You may take the same action more than once.
Example (1) - This player uses a submersible action to place the blue sea cucumber tile from their segment (red) of the sonar board onto their ocean board.
Instead, they could have chosen to take the red tile, as this is also in their segment. The player chooses to place the tile, undiscovered, into the adjacent zone to the right of their submersible. Instead, they could have placed the tile into either of the other adjacent zones (highlighted with dashed lines).
Example (2) - This player can use a submersible action to flip either the adjacent point of interested token or the adjacent yellow tile, as they are both undiscovered. They cannot flip the adjacent red tile as it has already been discovered.
Example (3) - This player uses a submersible action to take both bonus tokens from their segment (red) of the sonar board. If there were more bonus tokens in their segment, they could take them all.
Example (4) - This player uses a submersible action to move their submersible 4 vertices. They could have chosen to stop after fewer vertices of movement, but cannot travel more than 4 vertices in a single action.