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The evolution of fishes took place over a timeline which spans the Cambrian to the Cenozoic, including during that time in particular the Devonian, which has been dubbed the "age of fishes" for the many changes during that period. The Late Devonian extinctions played a crucial role in shaping the evolution of fish, or vertebrates in general. [1]
Herschel the sea lion was the moniker given to a series of male California sea lions in Seattle, Washington, United States. Herschel took up seasonal residence in the early to mid-1980s on the saltwater side of Seattle's Salmon Bay at the Ballard Locks where salmon runs were funneled into the fish ladder. Due to the volume of fish the groups ...
Pinniped. Pinnipeds (pronounced / ˈpɪnɪˌpɛdz / ), commonly known as seals, [a] are a widely distributed and diverse clade of carnivorous, fin -footed, semiaquatic, mostly marine mammals. They comprise the extant families Odobenidae (whose only living member is the walrus ), Otariidae (the eared seals: sea lions and fur seals ), and ...
Jellyfish. Spotted jellies swimming in a Tokyo aquarium. Jellyfish, also known as sea jellies, are the medusa -phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals with umbrella-shaped bells and trailing tentacles, although a few are ...
The Steller sea lion (Eumetopias jubatus, also known as Steller's sea lion or the northern sea lion) is a large, near-threatened species of sea lion, predominantly found in the coastal marine habitats of the northeast Pacific Ocean and the Pacific Northwest regions of North America, from north-central California to Oregon, Washington and British Columbia to Alaska.
William Henry Joseph Bonaparte Bertholf, known as Willie, was born in 1893 in Goshen, New York. His mother and grandmother chose his names to reflect different parts of his heritage: Joseph after Saint Joseph (Bible), Bonaparte (French), and Bertholf (biological father's last name). William and Henry which were added for "spiritual balance".
The Department of Fish and Game issued the first permit of its kind in California allowing Stauffer to temporarily house seals and sea lions at his home. [3] By 1976, while also a Laguna Beach lifeguard captain the city of Laguna Beach named him the head of Animal Services.
During swimming sea lions have a thrust phase, which lasts about 60% of the full cycle, and the recovery phase lasts the remaining 40%. A full cycle duration lasts about 0.5 to 1.0 seconds. Changing direction is a very rapid maneuver that is initiated by head movement towards the back of the animal that is followed by a spiral turn with the body.