Currents KEEP sweeping...prolly just avoid swimming...I seriously doubt that they'd write in HERDS entering the water en masse.
Things wash up all the time in places and they don't even have power of locomotion. If anything currents could actually help carry Walkers long distances. They are also followers so if one goes, or perhaps even falls in and then stands up and keeps walking others may join.
License plates, tires and AC units aren't palatable and they've been cut out of shark stomachs...our ocean vacuum cleaners aren't savvy about organizing taste tests...they usually swallow first...(giggity)...taste later. (Giggity giggity).
First, nice giggity, second sharks really aren't as wildly indiscriminate as often portrayed. It's not that certain incidents don't occur but the ocean isn't one giant and ongoing shark feeding frenzy either. Actually even if sharks were all that crazy they still aren't everywhere all the time. (I survived the beach for a week this year to prove it) More to the point we're talking about something a bit outside normal circumstance with the Walker virus. If writers wanted to make animals averse to consuming infected flesh that's easily on the table.
Earlier you made a reference to World War Z? Those zombies ran like Usain Bolt and made ladders of themselves up against buildings...different animals than the current subject matter.
