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Human activities affect marine life and marine habitats through overfishing, habitat loss, the introduction of invasive species, ocean pollution, ocean acidification and ocean warming. These impact marine ecosystems and food webs and may result in consequences as yet unrecognised for the biodiversity and continuation of marine life forms.
Animals featured include thousands of olive ridley sea turtles that come up to land to lay their eggs; Galápagos sea lion catching yellowfin tuna in the shallow bay of the coast; rock pool creatures including predators like starfish, sea anemones and clingfishes that prey on limpets and bivalves; a chain moray eel and an octopus hunt Sally ...
Loggerhead sea turtle escapes from fishing net through a turtle excluder device (TED) Threats to sea turtles are numerous and have caused many sea turtle species to be endangered. Of the seven extant species of sea turtles, six in the family Cheloniidae and one in the family Dermochelyidae, all are listed on the IUCN Red List of Endangered ...
Reptiles diversify and come to dominate both the land and the sea; in a flash-forward to the Jurassic, early sea turtles face predation from plesiosaurs, [f] and their hatchlings must avoid pterosaurs as they race to the water. Back in the Triassic, a massive precipitation event brings an end to the Pangaean desert, turning the world lush and ...
“For over 100 million years when dinosaurs were the dominant predators, mammals were generally small, nocturnal, and short-lived.” The pressure to stay alive eliminated the genes needed for ...
Large igneous province (LIP) eruptions [23] from the Siberian Traps, [24] an impact event (the Wilkes Land Crater), [25] an Anoxic event, [26] an Ice age, [27] or other possible causes End-Capitanian extinction event: 260 Ma: Volcanism from the Emeishan Traps, [28] resulting in global cooling and other effects Olson's Extinction: 270 Ma Unknown.
Sea turtles can also become disoriented and circle around in the same place. [29] Numerous cases show that misoriented hatchling sea turtles either die from dehydration, get consumed by a predator, or even burn to death in an abandoned fire. The direct impact of light pollution on the number of sea turtles has been too difficult to measure ...
Mass extinctions are characterized by the loss of at least 75% of species within a geologically short period of time (i.e., less than 2 million years). [18] [51] The Holocene extinction is also known as the "sixth extinction", as it is possibly the sixth mass extinction event, after the Ordovician–Silurian extinction events, the Late Devonian extinction, the Permian–Triassic extinction ...