Bottom-dwelling squid and octopus usually attach their eggs to a hard surface, but open ocean squid have no such luxury. For many years, scientists thought such squid simply released their eggs to the whims of the currents.
As penance for irregular posting, have a pair of seemingly-symbiotic rotifers in a cnidarian (jellyfish) polyp. There were several of them on several polyps, and they seemed not to mind the tentacles (loaded with stinging cells containing a harpoon-like weapon with paralytic abilities).
I know they look like they belong in the ocean 250 million years ago, but trilobite beetles are actually pretty happy existing in the present day.
Like a steaming pile of lava or the soggy soil below a melting glacier, the freshly scrubbed hull of a ship is a magnet for new life. The first creatures to the party are microbes like Pseudoalteromonas luteoviolacea, bacteria named for their curious habit of coloring themselves both yellow and purple in lab dishes.
Scientific divers aren’t looking to simply fill their collecting bags—they’re seeking scientific value, data that furthers their understanding of a place or process.
This is the fourth post in the Wonderful Things series. As we saw last time, the thin strip of sand found on beaches is home to many organisms that can dwell no where else.
Baby octopuses are notoriously difficult to keep alive in captivityas in, almost impossible. Like their adult parents, they’re sensitive to water pH and temperature and all of that jazz.