Some fishermen using dynamite manage to blow themselves up and an undersea lizard man starts attacking people. Stuff blows up every once in a while.

A woman decides to promote her resort in the area of the monster sightings to people into the Loch Ness Monster, the abominable snowman, and the yeti. She hires an obnoxious reporter as her PR man. A bunch of people do show up. She has a monster egg hunt, and there's no payoff for this: we see the hunt begin, but do not see them find either the egg she hid, or a real monster egg (if there were any). The hunt starts, and then all of a sudden it's nighttime.

One woman takes her top off and goes swimming. She has a nice figure. Nothing happens to her, which is OK, but there's not even any suspense in the scene.

At one point the monster somehow jumps up out of the water, grabs onto a helicopter, and pulls it down into the water. This was pretty hilarious. Then the copter predictably explodes.

Inexplicably, the monster is bulletproof. Grenades, however, are capable of decapitating it. Is there more than one? You'd think so, but I don't know.

Not worth watching at all. You're much better off with the Creature from the Black Lagoon series, and Humanoids from the Deep. The back of the video box states "Come along on this tour and get it all., plus an unadvertised bonus: 84 minutes of monstrous terror." If the movie is 84 minutes long, how is its running time a bonus? If it is advertised by that blurb, how is it unadvertised?