Sharks have one of the longest life spans compared with other animals.
Greenland sharks can live for at least 400 years, scientists have estimated.
Sharks are older than trees and dinosaurs
Additionally, sharks have survived five mass extinctions, one of which wiped out around 96% of all marine life.
Sharks may be helpful for our environment
Seagrass absorbs the carbon that is in the atmosphere and uses it to build its body. When the seagrass dies, the dead material gets buried in sediment on the ocean floor, and the carbon is taken out of circulation, Heithaus added.
Researchers are currently trying to determine whether this phenomenon occurs for other shark species and in other places such as coral reefs.
“It seems like it’s more than just tiger sharks,” Heithaus said. “It’s probably these bigger species that play an outsized role in helping shape the ecosystems they’re a part of.”
Shark pregnancies can last longer than 3 years
Reproduction patterns in sharks vary.
Sharks do not vocalize
Instead of speaking, sharks communicate through body language, such as zigzagging, shaking and moving their jaws.
Sharks can sense electricity
“The minute electrical impulse that a prey’s brain sends to its heart to tell it to beat is detectable to sharks, so they can find hidden prey quite effectively,” Macdonald said.
With this finely attuned sense, sharks hunt sick and weak animals, playing a crucial role in keeping the marine ecosystem healthy.