Conch in Build a Zoo are a sea-event collectible, basically a trade-in item you can turn in for rewards rather than something you keep using directly. Players on the game’s community pages describe them as ā€œocean treasuresā€ that you bring to the trash can NPC near the Sell area to exchange for items.

What they do

  • They are used for trading/redeeming with an NPC, not for feeding pets or building habitats.
  • They appear in the ā€œLost Sea Treasuresā€ event/reward pool alongside other ocean items like Fossil, Coral, and Ocean Heart.
  • Community info suggests you may need a lot of them to get useful rewards, so they act more like a currency/collectible than a simple one-off quest item.

Quick scoop

  • Use: trade-in item.
  • Where: near the Sell area, with the trash can character.
  • Why people collect them: to exchange for event rewards from the sea-treasure system.

TL;DR: conch are event collectibles in Build a Zoo that you trade in for rewards, usually through the NPC near the Sell area.