Leopard seals suck up krill like whales

@article{Yong2012LeopardSS,
  title={Leopard seals suck up krill like whales},
  author={Ed Yong},
  journal={Nature},
  year={2012}
}
Top Antarctic predator can strain small prey from the water with sieve-like teeth. 

Paper Mentions

References

Leopard seals (Hydrurga leptonyx) use suction and filter feeding when hunting small prey underwater
TLDR
Suction was used to draw small prey into the mouth followed by expulsion of ingested seawater through the sieve formed by postcanine teeth, confirming that the postcanines primarily serve a sieving function. Expand