Exploring the ocean is difficult and expensive so many parts of the ocean remain a mystery.
The disaster in "The Man in the Water" by Roger Rosenblatt occurred in 1982 when an airplane clipped a Potomac bridge during rush hour and went into the water. The heroic man in the water helped others before he drowned.
To whom are you sending invitations or
To who are you sending invitations ?
I think its b more complicated