This massive swarm of moon jellies (Aurelia aurita) swims in Alaskan waters where salmon eggs will make for an easy meal. Eggs that aren’t eaten will grow into salmon and will make their way into larger bodies of water. We even get a quick glimpse of a lion’s mane jelly (Cyanea capillata). This is a clip from NatGeoWild’s Alaska’s Deadliest.

Next: Lost in Jellyfish Lake, Palau and How Do Jellyfish Sting?

See more videos about...