Scuba divers are found in deeper parts of the water. Man Eater - Eat 3 People - 50 Gold - Swim along the surface to eat any swimmers then go to the islands, to the shallow water at the beach and with boost you can go a short distance on to the shore. Swimming Lesson - Swim 500M - 50 Gold - Swim along the surface back and forth between the two islands where you spawn eating pelicans and flying fish and dipping below for other fish as needed until complete. These are plentiful and not hard to find. Tropical Terror - Eat 50 Tropical Fish - 50 Gold - These are the small harmless, colorful fish that tend to be in schools. The missions in the order they are shown when selecting the shell icon in the upper left of the main game screen are as follows, by title, requirement, reward, and additional information/tip: No harm, of course, if you do collect shells and or complete missions in the process. I recommend ignoring the shells and missions at first and farming gold until you have the 2000 for the Basic Map.

Repeat spawning in and collecting shells/completing missions until the Super Mission is unlocked. It is unlikely that you will do them all in one life. Once a mission shell is collected select the shell icon in the upper left of the main screen to verify what the mission is and don't bother making progress en route to the next mission shell unless it is easily done. A mission is only completed when the entire requirement is met in one life after having collected the mission shell. All missions for which you have collected the shell remain active until you complete them, meaning you can gain progress on any and all missions for which you have collected the shell and you will not need to collect the shell again if you die. For example, if you get the shell for Man Eater and you have already eaten two people for this life, you still have to eat three more people. Once you have collected the corresponding shell, that mission becomes active and thus no prior progress is counted.

Hungry shark evolution map shells