To replace the water, they drink salt water and actively secrete the excess salt ingested with the seawater back into the environment.
(they; drink; salt water) (they; actively secrete; the excess salt ingested with the seawater back into the environment) (the excess salt; ingested; )
they they the excess salt
drink actively secrete ingested
salt water
the excess salt ingested with the seawater back into the environment