Lost My Horse To Seasail

When you throw an item into the seasail hopper that is NOT a pass, it just dissapears. I accidently threw my level 17 BLACK HORSE. Is there a way to get it back?

 

There's no way to get it back other than buying it back from the Trade Market. Don't worry, that only costs a few LE at most.

 

Unfortunately, there is no way to get an item that you've lost back as per a 'No Refund Policy'. Mods cannot tell if you've genuinely lost an item or are simply faking it. In order to truly enforce this policy, no amount of evidence will ever allow an item to be returned (Even if you've got a video where you were playing Wynncraft and an item randomly disappeared/you dropped an item into a hopper which took it), so the best thing you can do is try to buy a new black horse off the trade market.