1. act/work very quickly
2. (i) stumbled upon
4. She tried to move them upright so they could breathe more easily.
5. the volunteers
6. (i) F
7. beached; covered; drenched
8. (i) They chase prey too far inshore.
(ii) They try to protect a sick member of the group.
9. the spit’s long coastline; gently sloping beaches