Ribbon around earth/One meter/Animal/Exercise

Around the Earth along the equator, a ribbon is placed. However, the ribbon is one meter longer than the equator, so that it is lifted uniformly all around to be tense. Which of the following creatures can run/fly/swim/dance under it?

1. An amoeba.
2. An ant.
3. A tit.
4. A flounder.
5. A boa constrictor.
6. A guinea pig.
7. A boa constrictor that has swallowed a guinea pig.
8. A very good limbo dancer.

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