Catching Some Rays is an achievement that requires the player to catch a raw manta ray in the Fishing Trawler minigame. Fishing level boosts such as fishing potions (+3) and admiral pies (+5) may be used. Boosts can be used right before checking the trawler net as the required level does not have to be met during the activity itself.
For Ironmen, the achievement requires the player to successfully cook a rocktail on the Witchaven dock.