Converting Toho Classic Monsters into realistic Legendary Pictures counterparts

With the fact that the 2014 American Godzilla has realistic abilities/traits vs its original Japanese Gojira counterpart, I had the idea of converting a few of the classic Toho monsters into realistic Legendary Pictures [LP] counterparts.Due to our American Godzilla having oceanic qualities, I wanted the other LP counterpart monsters to also originate from the ocean/deep sea. So far I have concept thoughts for Ebirah, Manda, and Destroyah. I will give a nutshell intro to the classic monster and then introduce my LP counterpart. I encourage you readers to look up the real animals I'm using so you too can learn of these neat and real critters.

Note I don't have a name yet for my monsters. Whenever I make a monster concept, its look and abilities are easy; but an appropiate name is the hardest part (first impressions are importent after all). After you read my monsters based off of Toho Classic Monsters, I encourage you to do the same type process for other Toho Classic Monsters.

Classic Toho Monster #1: Ebirah
Species: Giant Lobster
Length: 50-100 meters
Height: 30-60 meters
Abilities: Strong claws, adept swimmer, tough shell


My Legendary Pictures Counterpart: [No name Yet]
Species: Mantis Shrimp/Giant Isopod mix
Length: 100 Meters
Height: 50 Meters
Abilities: Like the Mantis Shrimp, this creature has powerful hammer claws that travel at the speed of a .22 callibur bullet (no other animal has arms/legs that can travel this fast). Like the Giant Isopod, it's got a very tough shell and can curl up into a ball to protect itself.

Reason for animal choices: The Mantis Shrimp has a very impressive set of claws, powerful enough for this 15" critter to break the glass of an aquarium. Not even a camera that captures 5,000 frames/second can fully capture this 'monster' claw attack speed. In the deep sea, huge Isopods the size of a human hand (or slightly bigger) were found. These are a fine example of deep sea gigantism and provides a better defense for the shrimp aspects.
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Classic Toho Monster #2: Manda
Species: Sea Dragon
Length: 150-300 Meters
Height: 10-40 Meters
Abilities: Constricting, able to move slowly on land, fast swimmer, able to live in land or in water.

My Legendary Pictures Counterpart: [No Name Yet]
Species: Banded Sea Krait/Black Dragonfish
Length: 300 Meters
Height: 40 Meters
Abilities: Can breath air and water, can move on land, good swimmer, venomous bite, bio-luminescent, extendable stomach, stomach prevents glow from inside being seen on the outside.

Reaon for animal choices: I thought a more serpentine body would better suit a "Manda" than tiny legs to move on land. Thus the Sea Kraits, being a type of snake, suits this aspect very well. Manda lived in the ocean, thus an oceanic species is needed to complete the monster. Black Dragonfish, last I recalled, had 'red lights'. See most sea species cannot see the color red, but this critter can! So it could shine on prey and not even be noticed. Like the Angler Fish, females are massive and can glow (Dragonfish even have a lure of its on, only it's on the chin). Its stomach not only extends to hold large prey but also prevents the glow from prey being noticed from others in the sea. This and their long teeth, mixed with a Sea Krait, makes this monster a really dangerous kaiju.
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Classic Toho Monster #3: Destoroyah
Species: Oxygen Destroyer irradiated crustacean.
Size: Varies due to many different forms. Final Form is 120 Meters tall.
Abilities:  Flight; can expel a Oxygen Destroyer Beam; Laser Horn; able to discharge energy through its tail; can divide into its Aggregate forms

My Legendary Pictures Counterpart: (Nicknames) "Abyssal Horror"/"Nightmare of the Deep"
Species: Dinoflagellates/Deinococcus radiodurans/Amoeba
Size: Due to its Amoeba-like quality, this monster can vary its shape and size.
Abilities/Reason for choices: In Lovecraft's world, I've always been fascinated by the amoeba-like monster called a Shoggoth. Later, upon looking for realistic traits for a monster idea, I found this creature is a (what I call) a Macro-organism, or a massive microorganism. Toho's Destoroyah is widely considered the greatest foe of Gojira, due to its breath weapon being the very thing that killed the 1954 Gojira. The Dinoflagellates are tiny organisms known to (at times) create a "Red Tide". This creates a "Dead Zone", or oxygen depleted section of water, killing anything that needs oxygen to breath in the area. The Amoeba trait is to give this horror a very flexible body. Deinococcus is known to survive cold, dehydration, vacuum, and acid! Bacteria have even been found to still be alive after being frozen solid for 30,000 years! A Godzilla sized, or bigger, monster that's a mix of all three microrganisms would be a Destoroyah-like horror. It could destroy the oxygen in a section of ocean, suffocating any gilled animal (even our Godzilla) before eating the helpless prey. This super weapon is needed for this creature does not have an armor of any kind.