Otter collection

[pipi1422]

I am on level 28. And when I click on the otter icon it says 'collection is locked' does anyone know what level it becomes unlocked? Thanks

[JzKalika]

I am on level 28. And when I click on the otter icon it says 'collection is locked' does anyone know what level it becomes unlocked? Thanks

The otter collection unlocks at level 35.