Are people still firing up “My Octopus Teacher” on Netflix ? The viral success of that documentary felt like a peak-pandemic phenomenon, when some of us were sufficiently starved for connection with both the natural world and our fellow humans that its thin anthropomorphic musings rang true. If it has a place in anyone’s heart today, however, then so will “ Remarkably Bright Creatures ,” a fictional bouillabaise of moist-eyed melodrama, marine-life metaphor and all-purpose cod philosophy that, were it not title-bound to the bestseller it’s based on, could have opportunistically been called “My Octopus Therapist” for its Netflix debut. The creature in question is Marcellus, a venerable, handsomely rust-colored specimen of giant Pacific octopus who serves as the film’s miraculously omniscient narrator.…