"Can he breath underwater?" "Yeah, he's strong underwater, too."
Godzilla King of the Monsters 1954
Godzilla vs the Sea Monster 1966/ Godzilla's Revenge 1969
Godzilla vs Biollante 1989
Godzilla vs King Ghidorah 1991
Godzilla and Mothra the Battle for the Earth 1992
Godzilla 2000 1999
Godzilla vs Megaguirus 2000
Godzilla, Mothra, and King Ghidorah Giant Monsters All-Out Attack 2001
Godzilla Tokyo SOS 2003
Godzilla King of the Monsters 2019
Godzilla vs Kong 2021
I stand by a favorite of mine was the underwater scene in the 2014 movie, cause of the sheer inky darkness of the footage used to track Godzilla as he was cruising before shifting gear and diving deeper and gaining speed.
With only the lights on godzilla showing only his dorsal fins as they cut through the dim particle filled water. Ugh that was sweet.
Kinda lost that sense of size and mystery in the following movies though, Godzilla looks too well lit in some of them and moving fast like he's half the size. Both in KOTM and GVK just like the overall movements I was hoping they'd slow them down a little.
Though the Tasman Sea battle in GVK IS second best, particularly on the surface battle.