Oceans under threat

Which of these are polluting the ocean?

• Plastics

• Sediments

• Medicines

• Footprints

This passage says that:

• Animals that have shells are deformed

• The ocean has a pH that is neutral or slightly basic

• Acidification means that shells won't grow properly

• Carbonic acid makes the ocean fizzy

The acidity of the ocean is...

Creatures who have deformed shells...

• Can't swim properly

• May die

• Taste yummier

• Can't survive in their habitat

In te ao Māori, a healthy moana enhances the mauri of the people around it.

• True

• False

Dense kuku (mussel) beds:

• Stabilise sediment

• Support fish populations

• Improve water quality

• Provide homes for other animals and plants

Which of these are ways that climate change affects the ocean.

• Extreme waves become more frequent.

• The temperature of the water rises.

• The ocean becomes more acidic.

• The food chain in the ocean is affected.

What is bycatch?

• Bycatch is the area of the beach that has rockpools.

• Bycatch is when birds and marine mammals are accidentally caught by fishing boats.

What is an introduced species?

• A tourist fish that comes for a tropical holiday.

• A species that has moved into an area but probably shouldn't be there.

• All types of seaweed.

• A threat to native creatures.

An example of GLOBAL extinction is...

• The T-Rex

• The Moa

• The Kōura

  (Crayfish)

• The Tara Iti

  (Fairy Tern)