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Peltodoris Nobilis
''Peltodoris nobilis'', common name, commonly called the sea lemon, false sea lemon, or the noble dorid, is a species of colorful sea slug, a dorid nudibranch, a shell-less marine (ocean), marine gastropod mollusk in the family Discodorididae.Gofas, S.; Rosenberg, G. (2015). ''Peltodoris nobilis'' (MacFarland, 1905). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=594422 on 2016-12-14 This species was previously placed in the genus ''Anisodoris'' and was known for a long time as ''Anisodoris nobilis''. Subsequently it was known as ''Diaulula nobilis''. This animal gives off a pleasant citrus smell when it is handled, and this (along with its yellow coloration) is what is responsible for the common name "sea lemon". Its diet includes Mycale adhaerens, the purple scallop sponge Distribution This species occurs in the Eastern Pacific Ocean from Alaska to Baja California. It eats sponges. Descrip ...
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Frank Mace MacFarland
Frank Mace MacFarland (1869–1951) was an American malacologist associated with Stanford University in California. Born in Centralia, Illinois, MacFarland attended DePauw University (A.B. 1889), Stanford University (A.M., 1893) and the University of Wurzburg (PhD, 1896). On August 27, 1902, MacFarland married Olive Knowles Hornbrook (b.30 June 1872, West Virginia; B.L. 1893, Ohio Wesleyan University; A.B. 1908, Stanford; d. 1 May 1962, San Mateo, California). Mrs. MacFarland was a skilled technician and artist whose delicate watercolor paintings illustrated many of his scientific publications. Frank MacFarland was an authority on the life and habits of nudibranchs and he left unfinished a comprehensive monograph on the group which was published posthumously in 1966. He played a leading role in organizing the Hopkins Seaside Laboratory (now Hopkins Marine Station) in Pacific Grove, California, of which he was in charge from 1910 to 1913 and co-director from 1915 to 1917, and in wh ...
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Mycale Adhaerens
''Mycale adhaerens'', the purple scallop sponge, is a species of marine demosponge in the family Mycalidae. ''Mycale'' is a large genus and this species is placed in the subgenus ''Aegogropila'' making its full name, ''Mycale'' (''Aegogropila'') ''adhaerens''. It grows symbiotically on the valves of scallop shells and is native to the west coast of North America. Description ''Mycale adhaerens'' forms a thin encrusting layer on the valves of living scallop shells such as ''Chlamys hastata'' and ''Chlamys rubida''. It ranges in colour from yellowish-brown through purple to pink. The only other species of sponge growing on the Pacific Coast with which it might be confused is ''Myxilla incrustans''; that species is usually some shade of brown, has a finer, less fibrous structure and has larger oscula. Ecology The relationship between the sponge and the scallop on which it lives is mutualistic, each receiving benefits. The scallop is often preyed on by the starfish ''Evasterias tro ...
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Moss Beach
Moss Beach is a coastal census-designated place in San Mateo County, California, with a year 2020 census population of 3,214. Located in Moss Beach are the Fitzgerald Marine Reserve, a marine sanctuary; the Half Moon Bay Airport, the historic Moss Beach Distillery; and the Seal Cove Inn, a destination lodging property. Moss Beach is a cool coastal microclimate that gives one a sense of separation from the nearby metropolitan San Francisco Bay Area and assures that summer temperatures are generally mild. History Moss Beach began as a resort destination, with its first hotel built in 1881 by Juergen Wienke. It grew with the advent of the Ocean Shore Railroad. Geography Moss Beach is situated at 37°31'31" North latitude, 122°30'46" West (37.525240, -122.512811), approximately south of San Francisco and north of Santa Cruz, California. Nearby towns include Montara to the north, El Granada, Princeton-by-the-Sea, and Half Moon Bay to the south. According to the United State ...
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Red Algae
Red algae, or Rhodophyta (, ; ), are one of the oldest groups of eukaryotic algae. The Rhodophyta also comprises one of the largest phyla of algae, containing over 7,000 currently recognized species with taxonomic revisions ongoing. The majority of species (6,793) are found in the Florideophyceae (class), and mostly consist of multicellular, marine algae, including many notable seaweeds. Red algae are abundant in marine habitats but relatively rare in freshwaters. Approximately 5% of red algae species occur in freshwater environments, with greater concentrations found in warmer areas. Except for two coastal cave dwelling species in the asexual class Cyanidiophyceae, there are no terrestrial species, which may be due to an evolutionary bottleneck in which the last common ancestor lost about 25% of its core genes and much of its evolutionary plasticity. The red algae form a distinct group characterized by having eukaryotic cells without flagella and centrioles, chloroplasts that l ...
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Tubercles
In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal. In plants A tubercle is generally a wart-like projection, but it has slightly different meaning depending on which family of plants or animals it is used to refer to. In the case of certain orchids and cacti, it denotes a round nodule, small eminence, or warty outgrowth found on the lip. They are also known as podaria (singular ''podarium''). When referring to some members of the pea family, it is used to refer to the wart-like excrescences that are found on the roots. In fungi In mycology, a tubercle is used to refer to a mass of hyphae from which a mushroom is made. In animals When it is used in relation to certain dorid nudibranchs such as '' Peltodoris nobilis'', it means the nodules on the dorsum of the animal. The tubercles in nudibranchs can present themselves in different ways: ...
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Sponges
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellular, h ...
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Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of Baja California (). It has an area of (3.57% of the land mass of Mexico) and comprises the northern half of the Baja California Peninsula, north of the 28th parallel, plus oceanic Guadalupe Island. The mainland portion of the state is bordered on the west by the Pacific Ocean; on the east by Sonora, the U.S. state of Arizona, and the Gulf of California; on the north by the U.S. state of California; and on the south by Baja California Sur. The state has an estimated population of 3,769,020 as of 2020, significantly higher than the sparsely populated Baja California Sur to the south, and similar to San Diego County, California, to its north. Over 75% of ...
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Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ...
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Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean
. '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc.
The centers of both the

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Lemon
The lemon (''Citrus limon'') is a species of small evergreen trees in the flowering plant family Rutaceae, native to Asia, primarily Northeast India (Assam), Northern Myanmar or China. The tree's ellipsoidal yellow fruit is used for culinary and non-culinary purposes throughout the world, primarily for its juice, which has both culinary and cleaning uses. The pulp and rind are also used in cooking and baking. The juice of the lemon is about 5% to 6% citric acid, with a pH of around 2.2, giving it a sour taste. The distinctive sour taste of lemon juice makes it a key ingredient in drinks and foods such as lemonade and lemon meringue pie. History The origin of the lemon is unknown, though lemons are thought to have first grown in Assam (a region in northeast India), northern Myanmar or China. A genomic study of the lemon indicated it was a hybrid between bitter orange (sour orange) and citron. Lemons are supposed to have entered Europe near southern Italy no later tha ...
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Common Name
In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrasted with the scientific name for the same organism, which is Latinized. A common name is sometimes frequently used, but that is not always the case. In chemistry, IUPAC defines a common name as one that, although it unambiguously defines a chemical, does not follow the current systematic naming convention, such as acetone, systematically 2-propanone, while a vernacular name describes one used in a lab, trade or industry that does not unambiguously describe a single chemical, such as copper sulfate, which may refer to either copper(I) sulfate or copper(II) sulfate. Sometimes common names are created by authorities on one particular subject, in an attempt to make it possible for members of the general public (including such interested par ...
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Citrus
''Citrus'' is a genus of flowering plant, flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as Orange (fruit), oranges, Lemon, lemons, grapefruits, pomelos, and lime (fruit), limes. The genus ''Citrus'' is native to South Asia, East Asia, Southeast Asia, Melanesia, and Australia (continent), Australia. Various citrus species have been used and domesticated by indigenous cultures in these areas since ancient times. From there its cultivation spread into Micronesia and Polynesia by the Austronesian expansion (c. 3000–1500 BCE); and to the Middle East and the Mediterranean (c. 1200 BCE) via the incense trade route, and onwards to Europe and the Americas. History Citrus plants are native to subtropical and tropical regions of Asia, Island Southeast Asia, Near Oceania, and northeastern Australia. Domestication of citrus species involved much hybridization and introgression, leaving much uncertainty ab ...
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