porpoise

"December 20, 1787 My last to you was of Oct. 8 by the Count de Moustier. Yours of July 18. Sep. 6. & Oct. 24. have been successively received, yesterday, the day before & three or four days before that. — Thomas Jefferson, letter to James Madison."

"My sister is a biologist studying the effects of pollution on local river ecosystems. "

"The student attempted to answer the question, but he didn't know the correct answer. "

"The wind blew the door shut violently, making everyone jump. "

"We watched the pod of dolphins as they porpoised gracefully across the bay, rising and falling in a rhythmic dance. "

"a continuous current of electricity"

"He repeatedly violated the court order, and shall now be punished."

"The tour promised spiritual experiences with humpback whales and other cetaceans, but all we saw were seagulls and a dead sea otter."

"The runner was breathing heavily after the long race. "

"The harbor was filled with various watercraft, from small fishing boats to large cargo ships. "

"The complicated instructions on the new software difficult me from completing the project on time. "

"The kitten playfully batted at the dangling string. "