This is the third entry of the Creature series and my least favorite. The first half of the film while they were hunting the Creature was alright but after the Creature got burned and it was discovered that he had lungs, the movie was over for me at this point. He became nothing more than a prop in his own movie. It was more about a love triange rather than the Creature causing havok. Then at the end, he started walking to the ocean and we do not see the results. No real ending. He either drowned like he almost did earlier in the movie or maybe his gills grew back after he had time to heal from the burns and he could go back underwater again. We will never know.
After he had his gills burned off and we got a look at him with the bandages off, he didn't look like our favorite gillman but rather a bloated dried out version of himself. It was too bad to end the series this way. A great monster deserved a better ending. I have talked to some who say this is their favorite one in the series and that is fine. It is all a matter of opinion.