Take another look at the sentence:

Danny loved going to the beach. He watched beautiful women in skimpy bikinis, ate fresh seafood, and swum in the refreshing water. After a shark bit his leg, however, Danny preferred the pool at his apartment complex.

The second verb, swum, is incorrect. Since there are no auxilary verbs, the sentence needs just the simple past form, swam.

Swim is an irregular verb; the chart below shows its forms.

Verb Simple Present Simple Past Past Participle
swim swim(s) swam swum

Ate, the verb you chose, is perfectly correct. Before you continue, review the rules for irregular verbs.

Try again to become a champion!

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