Fastest-growing marine plant
- Who
- Macrocystis pyrifera, Giant sea kelp
- What
- 0.000021 kilometre(s) per hour
- Where
- Not Applicable
- When
- Not applicable
With a growth speed of up to 0.5 m (1 ft 7.6 in) per day, or 0.000021 km/h (0.000013 mph), as its fronds approach the surface, the giant kelp (Macrocystis pyrifera) found off rocky shores in the Pacific Ocean is the world’s fastest-growing marine plant.
Giant kelp is also the longest seaweed species, with one specimen measured at 60 m (197 ft) in length.
The fastest-growing plants known overall are certain species of bamboo, a member of the grass family that can grow at a rate of 91 cm (2 ft 11 in) per day.