Water Creatures moves on land
 

Don't know if it is game-wise or zone-wise issue.

Water creatures in Qeynos Catacomb like the sharks can move onto land to attack players. Attached is a screenshoot of such event happens

Well known issue. Should be many old posts about it.

http://www.spike.com/video-clips/gytf2i/land-shark

confirmed classic

Not sure about the shark but I remember when I played the original EQ I used to get up on land when I got attacked by large piranha.

Move away from the water, they'll go back in the water and leave you alone.