Fish
Hammerhead shark
Sphyrna lewiniConservation statusCritically Endangered
DietFish that swim in schools, squid and rays
Lifespan30-35 years
Size and weightUp to about 4 m
A wide, flat head shaped like a hammer.
Hammer head
What makes it specialThe shape of the head lets it see almost 360 degrees around. It also spreads its sensors for electricity over a wide area.
Surprising factBy day it forms schools of hundreds. Scientists still have no agreed explanation for this.
PopulationHas fallen by more than 80 percent worldwide in the last 30 years.
Deep water near Vicente Roca