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The first recorded observations on the distribution and habits of marine life were made by Aristotle (384–322 BC). [3] Observations made in the earliest studies of marine biology provided an impetus for the age of discovery and exploration that followed. During this time, a vast amount of knowledge was gained about life that exists in the oceans.
Marine biology studies species that live in marine habitats. Most of the Earth's surface is covered by ocean, which is the home to marine life. Oceans average nearly four kilometers in-depth and are fringed with coastlines that run for about 360,000 kilometres. [4] [5] Marine biology can be contrasted with biological oceanography.
The development of marine biology as a scientific field was hampered by the incapacity to efficiently investigate these organisms in their native habitats. This problem was a significant pain point and was resolved by Villepreux-Power's idea, which helped scientists learn more about the biology and behavior of marine life.
Siphonophorae (from Greek siphōn 'tube' + pherein 'to bear' [2]) is an order within Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. According to the World Register of Marine Species, the order contains 175 species described thus far. [3] Siphonophores are highly polymorphic and complex organisms. [4]
Today, marine species range in size from the microscopic phytoplankton, which can be as small as 0.02–micrometres; to huge cetaceans like the blue whale, which can reach 33 m (108 ft) in length. [5] [6] Marine microorganisms have been variously estimated as constituting about 70% [7] or about 90% [8] [1] of the total marine biomass.
Philip Henry Gosse FRS (/ ɡ ɒ s /; 6 April 1810 – 23 August 1888), known to his friends as Henry, [1] was an English naturalist and populariser of natural science, an early improver of the seawater aquarium, and a painstaking innovator in the study of marine biology. Gosse created and stocked the world's first public marine aquarium at ...
Theories for the formation of the Moon must explain its late formation as well as the following facts. First, the Moon has a low density (3.3 times that of water, compared to 5.5 for the Earth [49]) and a small metallic core. Second, the Earth and Moon have the same oxygen isotopic signature (relative
Oceanography (from Ancient Greek ὠκεανός (ōkeanós) 'ocean' and γραφή (graphḗ) 'writing'), also known as oceanology, sea science, ocean science, and marine science, is the scientific study of the ocean, including its physics, chemistry, biology, and geology.