Wood cutting print titled „Са́льпы“.From Брем, Альфред Эдмунд (Alfred Edmund Brehm), Жизнь животных, Т. 3, Пресмыкающиеся, земноводные, рыбы, насекомые, низшие животные, Санкт-Петербург, «Просвещение», 1902.Alfred Edmund Brehm (German, born 2 February 1829 in Unterrenthendorf, now called Renthendorf; died 11 November 1884 in Renthendorf) was a German zoologist, natural history illustrator and writer, the son of Christian Ludwig Brehm.A salp (plural salps) or salpa (plural salpae or salpas) is a barrel-shaped, planktonic tunicate. It moves by contracting, thus pumping water through its gelatinous body. This is also used for locomotion, and salp jet propulsion is one of the most efficient in the animal kingdom. The salp strains the pumped water through its internal feeding filters, feeding on phytoplankton. Salps are common in equatorial, temperate, and cold seas, where they can be seen at the surface, singly or in long, stringy colonies. The most abundant concentrations of salps are in the Southern Ocean (near Antarctica), where they sometimes form enormous swarms, often in deep water, and are sometimes even more abundant than krill. Since 1910, while krill populations in the Southern Ocean have declined, salp populations appear to be increasing. Salps have been seen in increasing numbers along the coast of Washington. Approx. image size 19, 9 x 12, 9/24, 9 x 17 cm.

Condition: good.