The Silent World

I love the part where they dynamite the coral reef to get the boat through. For science! They also run over a baby whale, and kill the poor thing. At least they didn't fondue it. I have so say though, science was manlier in those days, and scientists weren't afraid to wear short-shorts.

What a blast from the past! I remember when I was a kid, the whole family would watch Cousteau's semi-annual specials on TV. Back then, they only showed things once, and if you missed it, you missed it! Not like today, kids will probably never understand how a TV show could be special. And I don't remember them killing any whales, honestly it was a little shocking to re-watch it now, after all the years.

Calypso in 1980
Calypso was BYMS-26, a Royal Navy minesweeper built in Oregon, 1942


x-ray

These creatures are all of the order Gastropoda - having a single, often coiled, shell, as opposed to the bivalves, which have two matching shells. Most snails are hermaphroditic. Also, most snails have a right-hand twist to the shell, although there are exceptions.

Right:
X-ray image of a Channeled Whelk, showing internal structure.

Nudibranchs are a form of snail that has lost its shell, while Corollas and Sea Butterflies are snails that have abandoned not just their shells, but the snail-like existence entirely, swimming up into the water column as plankton.