Nice work! Love the concept! And I like that you can walk TOWARDS the threats from the side to make it harder for them to turn, I think you nailed it with how the seagulls and crabs veer slightly towards you.
That said, I think some shadow indicator off the side of the screen to show where the next crab or seagull is coming from would be nice. It's a little rough to dodge a crab towards the top of the screen only to have a seagull suddenly spawn right there and grab you. Maybe that's on me for dodging upwards, haha.
In any case, well done!!