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The pelagic food web, showing the central involvement of marine microorganisms in how the ocean imports nutrients from and then exports them back to the atmosphere and ocean floor. A marine food web is a food web of marine life. At the base of the ocean food web are single-celled algae and other plant-like organisms known as phytoplankton.
The orca (Orcinus orca), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. It is the only extant species in the genus Orcinus and is recognizable by its black-and-white patterned body. A cosmopolitan species, it is found in diverse marine environments, from Arctic to Antarctic regions to tropical seas.
The pygmy killer whale (Feresa attenuata) is a poorly known and rarely seen oceanic dolphin. [3] It is the only species in the genus Feresa.It derives its common name from sharing some physical characteristics with the orca, also known as the killer whale.
Humans sometimes live by hunting other animals for food and materials such as fur, sinew, and bone, as in this walrus hunt in the Arctic, but humans' status as apex predators is debated. Ecologists have debated whether humans are apex predators. For instance, Sylvain Bonhommeau and colleagues argued in 2013 that across the global food web, a ...
Orcas, or “killer whales,” can grow up to 27 feet long and weigh as much as six tons. Known as the ocean’s top predator, they’re extremely intelligent, with their own languages of clicks ...
Old Thom is a male North Atlantic killer whale (orca) known for being the only killer whale to regularly be sighted in the Gulf of Maine and the Bay of Fundy.Often referred to as a loner, the whale has never been seen with other orcas, but is often accompanied by Atlantic white-sided dolphins, who seem to feed alongside the orca. [1]
Drone videos of gray whales off Oregon have revealed new details about how the marine mammals find food. The findings were described in studies this summer. Drone video of gray whales offers new ...
The killer whale pod in Mexico hunts and attacks much larger whale sharks by targeting them from below, a study finds Killer Whales Are Hunting Whale Sharks — the Largest Fish in the World, New ...