This is the most impactful harmonic ice. Because of the need of derezzing an ice (which is a good thing for Echo), the effective cost of Bloop is 5, making it a rather expensive ice. But at 5 strenght and 3 subs, it is quite impactful and will cost more than most average sentries.
However, it will not stop the run and should be guarding a central rather than a remote.
Because of its derezzing effect, this ice should be in any harmonic mix of ice. But early in the game, this ice just cannot be rezzed, so having 3 copy of this ice might be too much.
The graphic of the ice seems to depict a huge fish with its mouth gaping wide to swallow the runner (it is a bit hard to see, I would have prefered if the lines where reinforced). The quote push the theme further. I do not know how the name of the ice fit into this. Good ice if you like harmonic ices.