Some Japanese guys find this bizarre sea creature washed upon the rocks. What do they do with it? Do they call a marine biologist to investigate? Do they take the camera footage to report this find on the news? Absolutely not! They decide to fuck with it. They poke, prod, and flip it on its "back." Then, in a mature gesture of discovery in the name of science, they pour soda into its "mouth." What happens afterward causes the men to become infected with a microorganism that will slowly mutate their bodies until they become mindless fish-like abominations.
The lesson here: Don't fuck with the Deep Ones!