300
Summarize:
Orcas hunt everything from fish to walruses, seals, sea lions, penguins, squid, sea turtles, sharks, and even other kinds of whales. Depending on the season and where they are, their diet varies—some orcas eat more fishes and squid than seals and penguins. But wherever they are in any of the world's oceans, average-sized orcas may eat about 500 pounds of food a day. Orcas have many hunting techniques, and bumping seals off ice is just one of them.
What is (answers may vary) example:
Orcas hunt a wide variety of sea creatures and eat close to 500 pounds a day. Their diet will vary depending on the season and their location.