They look like priceless brooches and are tremendously important to our planet. Emphases mine: Living diatoms make up a significant portion of the Earth’s biomass: they generate about 20 to 50 percent of the oxygen produced on the planet each year, take in over 6.7 billion metric tons of silicon…
(Source unknown) TIL that (a) tentacles and arms are two different things and (b) there is a lot more diversity to this family1 than I’d imagined! I don’t mean “family” in a taxonomic sense.↩︎…
Some absolutely marvelous photos of a Southen Blue-Ringed Octopus by @SammyGlennDives Like she’s dancing! Would love to find out what kind of protective gear the photographer had on. But it seems like the octopuses are very shy and will attack only when provoked, which is when their rings become…