Search results
Results from the WOW.Com Content Network
Swordfish charge at high speed through forage fish schools, slashing with their swords to kill or stun prey. They then turn and return to consume their "catch". Thresher sharks use their long tails to stun shoaling fishes. Before striking, the sharks compact schools of prey by swimming around them and splashing the water with their tails, often ...
Juvenile swordfish are far more vulnerable to predation, and are eaten by a wide range of predatory fish. [6] [23] Intensive fishery may be driving swordfishes and sharks into harder competition for reduced amounts of prey and therefore pitting them to fight more. [23] Human fishery is a major predator of swordfishes.
The decreased light intensity, replicates the typical lighting experienced at night time that stimulate the planktonic organisms to migrate. During an eclipse, some copepod species distribution is concentrated near the surface, for example Calanus finmarchicus displays a classic diurnal migration pattern but on a much shorter time scale during ...
The European eel (Anguilla anguilla) is the one most familiar to Western scientists, beginning with Aristotle, who wrote the earliest known inquiry into the natural history of eels. He speculated that they were born of "earth worms", which he believed were formed of mud, growing from the "guts of wet soil" rather than through sexual reproduction.
"80% of our migratory birds here in North America are actually migrating at night," he said. "A large impact that humans actually have on birds during migration is with the light that we produce ...
Some particular types of migration are anadromous, in which adult fish live in the sea and migrate into fresh water to spawn; and catadromous, in which adult fish live in fresh water and migrate into salt water to spawn. [2] Marine forage fish often make large migrations between their spawning, feeding and nursery grounds. Their movements are ...
And birds that migrate at night might start to migrate early. People might also “hear” the eclipse as bird song stops or as crickets start chirping and frogs start croaking early, Collins ...
These organisms migrate up into shallower water at dusk to feed on plankton. The layer is deeper when the moon is out, and can become shallower when clouds pass over the moon. [ 3 ] Lanternfish account for much of the biomass responsible for the deep scattering layer of the world's oceans.