Poe’s Annabel Lee

A stanza of Poe’s “Annabel Lee,” representative of meter, word choice, and repetition for effect. See the link it its citation for the full poem.

But our love it was stronger by far than the love
   Of those who were older than we—
   Of many far wiser than we—
And neither the angels in Heaven above
   Nor the demons down under the sea
Can ever dissever my soul from the soul
   Of the beautiful Annabel Lee;

Poe, Edgar Allan. “Annabel Lee.” 1849 https://www.poetryfoundation.org/poems/44885/annabel-lee

Sacculina Barnacle

Cool parasite:

Most deceptive of all – indeed probably holding the record for animals not looking remotely like the thing that zoologists know them to be – are the parasitic barnacles, such as Sacculina. Sacculina is not what it seems with a vengeance. Zoologists would never have realised that it is in fact a barnacle, but for its larva. The adult is a soft sac that clings to the underside of a crab and sends long, branching, plant-like roots inside to absorb nourishment from the crab’s tissues. The parasite not only doesn’t look like a barnacle, it doesn’t look like a crustacean of any kind. It has completely lost all trace of the armour plating, and all trace of the bodily segmentation that nearly all other arthropods have. It might as well be a parasitic plant or fungus. Yet, in terms of its evolutionary relationships, it is a crustacian, and not just a crustacean but specifically a barnacle. Barnacles are indeed not what they seem.

And it gets even better….

By the way, Sacculina‘s branching root system is not indiscriminate in its invasion of the crab’s tissues. It heads first for the crab’s reproductive organs, which has the effect of castrating the crab. Is this just an accidental by-product? Probably not. Castration not only sterilises the crab. Like a fat bullock, the castrated crab, instead of concentrating on becoming a lean, mean, reproducing machine, diverts resources towards getting larger: more food for the parasite.

Richard Dawkins. The ancestor’s tale : a pilgrimage to the dawn of evolution (Boston: Houghton Mifflin, 2004), 434-35

In action (from Hans Hillewaert, via Wikimedia Commons):

Sacculina carcini (double infection)

Frog Eggs

An interesting process that I do not recall hearing of earlier:

Another South American frog species, named Rhinoderma darwinii after its illustrious discoverer, practises a most unusual version of viviparity. The male appears to eat the eggs that he has fertilised. The eggs don’t travel down his gut, however. Like many male frogs, he has a commodious vocal sac, used as a resonator to amplify the voice, and it is in this moist chamber that the eggs lodge. There they develop, until they are finally vomited out as fully formed froglets, forgoing the freedom to swim as tadpoles.

Richard Dawkins. The ancestor’s tale : a pilgrimage to the dawn of evolution (Boston: Houghton Mifflin, 2004), 295-96.