World’s most venomous blue-ringed octopus turns yellow to warn, one bite can kill humans

Normally, the blue-ringed octopus is brown or cream in colour, blending easily with rocks and sand. But when disturbed, it ...
New York Post

Highly venomous male octopuses poison females before sex — to avoid being eaten after mating, scientists say

It’s an octopus-eat-octopus world. Scientists have discovered that when mating, male blue-lined octopuses will inject a powerful, incapacitating neurotoxin into the hearts of female octopuses — to ...