However, the two shark species, which once coexisted, likely hunted some of the same prey. This competition could potentially have been one reason why the 65-foot-long (20-meter-long) megalodon ...

For populations to thrive, they require large habitats and large numbers of prey. When they begin to ... it may have also been what doomed them. Either by setting them up to eventually directly ...

Once orb-weaver spiders ensnare male fireflies in their webs, they turn the doomed insects into bait ... Precisely how the spider alters its immobilised prey’s signals is still unknown, but ...