Megalodon

Megalodon is a shark that appeared in Godzilla: Lord of the Galaxy.

Megalodon was believed to be one of the largest predators that ever lived on Earth, until the Titans were discovered. The average length of this species is 10.5 meters. The Megalodon that was shown in episode 1 was around 19 meters long.

Name
The word Megalodon derives from Greek, meaning "giant tooth." The shark's full scientific name is Otodus Megalodon. It was previously designated as Carcharodon Megalodon, after it was thought to be the ancestor of the Great White Shark.

Design
The design of Megalodon was based on Sand Tiger Shark and Great White Shark. Megalodon seen in episode 1 has tan skin and white belly.

Origins
Megalodon species was believed to be extinct, until an alive specimen was found in 1980s. The modern Megalodons are similar to their extinct counterparts, however they adapted to live in the depths.

Episode One - The Arrival
A Megalodon can be seen swimming in the ocean near Japan, until it got scared by the appearance of Fake Godzilla.

Bite
Megalodon has strong jaws that can tear flesh or even crush bones of smaller animals. However, the biteforce of this shark wouldn't be enough to damage the skin of small Titans like Rhedosaurus.

Amphibiousness
As a shark species, Megalodons spend their whole life underwater. They live near the deep ocean trenches and entrances to the Underground world.

Trivia

 * The same Pivot stick of Megalodon was used in "Mosasaurus vs Megalodon" fight made by DinoMania, with Megalodon having slightly different colors.