In the well produced and I assume well financed vid below it is in error for not including and stressing the importance of the smaller earlier but totally essential diatoms and algae, leading to protozoa and phytoplankton and zooplankton. Four and five successive and distinct layers in which none of them can be dispensed with, until now of course and therefore the marine food chain will and apparently is collapsing.
For instance the massive seabird collapse three / four years ago, largely unexplained, buried as news, we do know massive numbers flew inshore a total contradiction to their habit and their stomachs were empty, they were starving.
Never does anyone talk of diatoms but heres a comment i made today for the embed below and it sums up the matter well…
I quote …. “Great job BUT …. is that sea floor greatly depleted (I don’t know the area)… also you MUST please include diatoms and plankton in the food chain, without them none of this exists. Diatoms also provide 20% of the worlds CO2 to O conversion and ironically its burning the ancient diatom accretions of oil and gas that have led to their and our impending demise. Seventy percent of our oil and gas is of diatom origin. The irony is tragic. Diatoms are microscopic and to paraphrase trump “Who would have tought something so small was so important” ….
Hint : google image search ‘diatoms’…
Heres where i found the embed above … https://futurism.com/2017-costliest-disasters-u-s-history