"Kraken" negates a Monster, "Mizuchi" negates a Spell, and "Cetus" negates a Trap
The only way to really explain this is by running through an example turn
(possibly a small bug), Magikarp (worm used as bait) -Jungle: Exeggutor (crab), Seaking (coral), Weepinbell (bird), Eevee (butterflies), Spearow (worm), Venonat (bee) -Fossil: Psyduck (fish) -Team Rocket: Oddish (frog), Slowpoke (butterflies and fish) -Vending 1: Squirtle (butterfly) -Neo Discovery: Wobbuffet (very cartoony worm), Wooper (sea anemone) And thats interesting about dressing up milk bottles as the mother animal and really makes sense
How many cards are in a Celebrations master set
During your opponents turn, its Quick Effect can destroy a Machine you control and salvage the scrap to Special Summon a Machina from your Deck with a different name and equal or lower Level than that Machine