Compared to the seawater around them, most marine invertebrates are Naim 00:39 AP Biology Chapter 32 Compared to the seawater around them, most marine invertebrates are A) hypoosmotic. B) isoosmotic. C) hyperosmotic. D) hyperosmotic and isoosmotic. E) hypoosmotic and isosmotic. Answer: B Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+