Penguins eat krill (a shrimplike crustacean in the family Euphausiidae), squids, and fishes.

They don’t eat krill

Penguins’ bills are generally short and stout with a strong grip. Larger penguins like the Emperor and King have down curved bills, possibly to help them catch fast swimming fish and squid in deep cold waters.

Food fads

Penguins feed on small fish, floating crabs and squids. Most species of penguins eat snow, and all of them drink salt water and fresh water. They can endure long periods without food on land.

http://www.panda.org/news_facts/education/middle_school/species/species_carnivores/penguin/index.cfm

Eating Habits Of Penguins

http://bcsberlin.k12.nj.us/CPUsite/Lessons/Penguins.htm

Penguins are meat eaters (carnivores) they eat smaller fish and squid in the ocean.

The link above is chock full of information in case you need more.

http://www.seaworld.org/infobooks/Penguins/home.html

Since it’s from Seaworld……they ought to know.

Have fun and good luck