2:01 It can be a pretty tough existence, though.
2:04 Trillions are born here, but only a few make it to adulthood.
2:14 He may be no larger than a pin head,
2:16 but this crab larva is an arrow worm's worst nightmare.
2:22 (Bumping noises)
2:32 (Buzzing)
2:35 Epic battles between carnivores like these are just one way to get food.
2:41 But the real powers of this place come from phytoplankton.
2:47 Single-celled life