Catch all aberrations.

Visit every dock in the game.

Solve all fish shrine puzzles.

Banish 10 threats.

Catch 150 fish in trawl nets.

Research all engines.

Hear a Foghorn echo.

Use Mixed Bait to attract 3 different species to a single spot.

Use Atrophy on a fishing spot a long way away.

Find a use for the relics.

Relinquish the Necklace.

Catch 100 crabs in crab pots.