Sea otters

The video explains the importance of kelp forests as habitats for marine life and the threat posed by sea urchins that feed on kelp. Sea otters play a crucial role in controlling the sea urchin population, thus maintaining the balance of the ecosystem. As omnivores, sea otters are part of a complex food web and are considered a keystone species due to their significant impact on the environment. Without sea otters, the kelp forest ecosystem would collapse, affecting various marine species.

What is the primary threat to the kelp forest?

• Pollution

• Overfishing

• Climate change

• Sea urchins

How do sea otters contribute to the kelp forest ecosystem?

• By cleaning the water

• By eating sea urchins

• By providing shelter

• By planting kelp

What type of diet do sea otters have?

• Omnivore

• Herbivore

• Insectivore

• Carnivore

What would happen if sea otters did not control the sea urchin population?

• The fish population would increase

• The sea urchins would become extinct

• The kelp forest would thrive

• The kelp forest would be destroyed

Why is the sea otter considered a keystone species?

• It migrates long distances

• It helps maintain the balance of the ecosystem

• It is the largest predator in the ocean

• It is the most numerous species in the ocean