Replicating 'Sydney Shark' Physics inside a 2D UE4 project

I am trying to replicate the physics of ‘Sydney Shark’ inside of UE4 (Version 4.25.3). So far I have set up some boarders to prevent the shark from going outside the play area and would like to know if there is a way replicate the physics of the shark in ‘Sydney Shark’ (my game of inspiration) for my college project (a starter project that needs to be handed in, in a few weeks). Anyone got any ideas as to how? Thanks in advance.

My project so far:

Screenshot of gameplay of ‘Sydney Shark’ for reference: