In the air:
- Falcons: Peregrine falcons and merlins are predators of puffins, especially during the breeding season when puffins are flying back and forth to their burrows.
- Skuas: Great skuas and Arctic skuas are seabirds that prey on puffins and other small birds.
- Gulls: Glaucous gulls and herring gulls are opportunistic predators that may occasionally prey on puffins.
In the sea:
- Seals: Grey seals and harbor seals are predators of puffins, especially when puffins are diving for fish.
- Killer whales: Killer whales are apex predators that may occasionally prey on puffins.
- Porpoises: Porpoises are marine mammals that may prey on puffins, especially when puffins are diving for fish.