Przykładowe zdania:

• present simple for facts that are always true:

Christmas Island is the top of an underwater mountain in the Indian Ocean off Australia's northern coast.

It's home to about 1,500 people and 44 million red crabs.

 

• present simple for habits and routines:

For most of the year they live in the island's forests, but at the beginning of the rainy season they start to migrate to the ocean ...

During the migration, park rangers close roads and put up fences to guide the crabs to safety.

 

• present continuous for things that are happening now:

... millions of crabs are starting an epic walk from deep in the rainforests to the beach.

In vast numbers they're travelling through valleys and over hills, climbing over rocks ...