Nutrias marinas

The video discusses the importance of kelp forests as habitats for marine life and the threat posed by sea urchins. Otters, as omnivores, play a crucial role in the marine food web by controlling sea urchin populations. This balance is vital for the survival of various species, making otters a keystone species in the ecosystem.

Why are kelp forests important for schools of fish?

• They provide a source of food.

• They offer a safe place for young fish.

• They reduce water pollution.

• They increase water temperature.

What is the primary diet of sea urchins?

• Coral

• Plankton

• Kelp algae

• Small fish

How do otters contribute to the marine food web?

• By controlling sea urchin populations

• By eating only plants

• By cleaning the ocean floor

• By providing shelter for fish

What would happen if otters did not control sea urchin numbers?

• Fish populations would increase.

• Kelp forests would be destroyed.

• Sea urchins would become extinct.

• Kelp forests would thrive.

Why are otters considered a keystone species?

• They are the largest marine animals.

• They have no natural predators.

• They are the most numerous species in the ocean.

• They play a crucial role in maintaining ecosystem balance.