Scorpions and brown recluse spiders are fine as far as they go, but if
you want daily contact with venomous creatures, the ocean is the place
to be. Blue-ringed octopi, stony corals, sea jellies, stonefish,
lionfish, poison-fanged blennies, stingrays, cone snails, blind
remipedes, fire urchins--you can choose your poison in the ocean. Venoms
are often but not always defensive weapons. The banded sea krait, an
aquatic snake, wriggles into undersea caves to prey on vicious moray
eels, killing them with one of the world's most deadly neurotoxins,
which it injects through fangs that resemble hypodermic needles.