This game is very addicting and is one of my favorite games, but the energy of the larger sharks (the Megalodon and Dunkleosteus to be specific) runs out way too quickly! I left the Reef Shark idle, and it lasted for 1 minute and 20 seconds, whereas the Dunkleosteus, which automatically ate fish that were swimming by, only lived for 40 seconds. Considering that its health capacity is way bigger than the Reef Sharks and the fact that it was eating, this doesnt make much sense.
Other than this, I love the game and hope for future updates.
snivelingmess about Hungry Shark Evolution