torpedoed

"While snorkeling, we saw a torpedo lying still on the sandy bottom, its mottled skin blending perfectly with the environment. "

"While diving in the Mediterranean Sea, the marine biologist spotted several torpedoes lurking on the sandy bottom, their flat bodies blending seamlessly with the environment. "

"Her endeavor to learn Spanish required daily practice and dedication. "

"The new school principal is a powerful advocate for student success. "

"His constant negativity at work made it hard for the team to finish projects. "

"The constant noise from the construction site made it hard to concentrate on my homework. "

"The assassin exploded the car by means of a car bomb."

"Except for one or two days a year, he usually walks to work."

"The small boat had a dirty waterline, showing how high the water level had been when it was fully loaded. "

"The submarine traveled deep beneath the waves. "

"The student made a stealthy exit from the library, hoping no one would notice. "

"The secret passage undermined the foundation of the old house, making it unstable. "