The incredible amount of food
As one of the largest creatures ever on Earth, the horn whale, including blue whale, humpback whale and other species, uses a horn to filter everything in its own body and small fish from water.
However, the huge size and thin cluster of the horn Whale makes it difficult to answer basic information about the amount of food this species has.
A study published in the journal Nature recently described how researchers placed movementsensensorer-powered suction cards in 321 elephants to track their foraging activities.
Scientists use sound waves to measure the density of the population before and after the elephants eat. The team found that a green whale could eat about 16 tons of matter in a day.
Using daily measurements of seven species in the South Atlantic around the South pole, the study estimates that whale populations before being hunted may have consumed up to 430 million tons of matter per year, double the total number of matter species estimated to exist on Earth today.
Recycling machines for molluscs
After eating a large amount of iron-rich mealue, whale waste plays an essential role in providing that important nutrient to the rest of the ecosystem - especially the bulge plant.
Important Elongated plants are small creatures that are not only the basis of all ocean-based food chains but also provide a lot of oxygen to the Earth and are an important carbon sink.
"Elephants operate as machines to recycle highly mobile molluscs. The nutrients that Elder plants need to lock inside their molluscs and whale intestines are a "tool" to unlock them," stressed stressed Donald Savoca, a research author at Stanford University.
This positive feedback cycle may answer why the mollusk population is declining along with the whale instead of exploding as the giant hunters in the animal world reduce their numbers.
From 1900 to 1970, industrial whale hunting has killed about 1.5 million giant elephants from the South Atlantic.
"With blue whale making up more than 99% of their population, no natural system could withstand such a fierce attack," noted author Savoca.
New research shows that if the whale population is restored, the positive feedback loop created by this giant marine creature could trigger a "green wave" to restore the ocean ecosystem.
The study also highlights that whale hunting is currently only licensed in some countries, but elephants are facing existing threats from climate change, collisions with large vessels or being caught in fishing nets.
In addition to designating marine reserves, measures to curb climate change, regulations on transportation speed and fishing methods are also very important.
He emphasized that the benefits of the recovery of whale populations will affect the entire planet. "There will not only be more molluscs but also more fish and a healthier ecosystem," he said.
Green whale can be up to 34m long and weigh more than 150 tons. Thanks to that, although the blue whale is shorter, it is much larger than the 37m long, 70-tonne khung long Titanosaur, which is considered the largest khungone ever.
