The Giant Red Leech is one of the biggest in the world. The specimen captured on camera was around 30cm long but experts believe they could grow larger.
They have grown so big that they no longer simply suck blood but now actively hunt giant blue worms and suck them down like spaghetti. The worm it is eating is a whopping 78cm.
The new footage shows the leech detecting a worm's trail and following the scent like a sniffer dog.
When it encounters its prey it quickly latches on and moves its lips up and down the iridescent blue body.
"It was either searching for an end to grab, or was working out whether it was too big to eat" said documentary director Paul Williams.
"When it found an end it started to suck. It was incredible."
Wonders of the Monsoon will air on BBC 2 at 8pm on Sunday October 5th:
The ant pictured below comes from entomologist, blogger and insect photographer Alex Wild. The remarkable image of a trapjaw ant, torn asunder to reveal the wriggling, 8-inch parasitic worm living inside. (The ant, by comparison, measures about half an inch long.)
|Infected Ant via Alex Wild|
when they're not bursting at the seams with squirming parasites, trapjaw ants are capable of clamping their mandibles shut somewhere in the range of 35 to 64 meters per second (~78–145 miles per hour). The average duration of a trap-jaw clamp is just 0.13 milliseconds, making it among the fastest predatory strikes in the animal kingdom.
This video shows a trap-jaw ant (Odontomachus bauri) that fired its jaws against a hard surface and launched itself into the air (filmed at 3000 frames per second, played back at 30 frames per second).