Bluefin Tuna Eat Bait Ball | National Geographic

What is the special name for a large group of mackerel swimming closely together?

• A pod

• A school

• A flock

• A herd

Why do mackerel form a large 'bait ball' when predators are near?

• To play together

• To look like one big, scary animal

• To find more food

• To build a new home

Which animal uses air bubbles to help gather the mackerel into a tighter group?

• Tuna

• Sharks

• Dolphins

• Seabirds

Which of these animals is NOT shown hunting the mackerel in the video?

• Tuna

• Dolphins

• Sharks

• Whales