Girl Gone Reading: Island 731, Audible version
Island 731 by Jeremy Robinson, this book opens with a wounded WW2 naval man washed ashore on an island awakened from being eaten by scavengers. A short time later a glimpse of the real horror is revealed. The book switches gears and chimes in on a modern-day research vessel studying the Great Pacific Garbage Patch. Said vessel ends up on the island due to sabotage and a storm. People are dead and 1 is missing and a part of the crew go looking for missing mate on the island.