Part 2 for the novel "Meg: trench of horrors" (the title changed there are tons of changes)

After the prolouge, the scene is where rames (A biologist and a marine explorer) is on an exploration discovering animals that have high values to be sold to a buisness company, but as he's exploring with his crew in his submersible a massive object is detected and then as he checks he starts hearing rock crumbles behind him and seeing bubbles form, then rames and one kf his partners kin see a large blue whales swimming towards the trenches, Rames thinks the blue whale was the identified object but as he sighs a very large shadow attacks the blue whale causing a massive disturbance and several boulders crash and coral reefs start disbalancing, 2 members of his crew are killed in the rampage and one of the teammates are about to pass out but rames manages to aboard him and flee out of the trenches, the teammate thinking it was some disaster looks back to only see a massive shark with unique grey dots and lines of patterns like a whale shark with the build of a specalized great white appearing like a megalodon but as he watches with horror the shadow flashes away.