Under the SeaF. Watts, 1960 - 256 pagine |
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Pagina 72
... Sponges are another example . The word " sponge " was origin- ally applied to a household article used in washing ... sponges of com- merce belong to a half - dozen only of the 2,000 known species of sponges . They are found in ...
... Sponges are another example . The word " sponge " was origin- ally applied to a household article used in washing ... sponges of com- merce belong to a half - dozen only of the 2,000 known species of sponges . They are found in ...
Pagina 73
... sponge is small particles of plant and animal matter and bacteria , so that sponges may be described as living pumping stations and filter - beds in one . They , with other animals feeding on small decaying particles - the particulate ...
... sponge is small particles of plant and animal matter and bacteria , so that sponges may be described as living pumping stations and filter - beds in one . They , with other animals feeding on small decaying particles - the particulate ...
Pagina 83
... sponges . A sponge can be torn into a number of pieces , and provided these are returned to the sea each will grow into a new sponge . Fur- thermore , it is possible to take a piece of sponge , squeeze it through a bag of fine silk and ...
... sponges . A sponge can be torn into a number of pieces , and provided these are returned to the sea each will grow into a new sponge . Fur- thermore , it is possible to take a piece of sponge , squeeze it through a bag of fine silk and ...
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Parole e frasi comuni
arms Atlantic barnacles basking shark beach bivalve blue body bottom breeding burrow cephalopods chitons coast coccolithophores coelacanth color copepods coral crabs crustaceans currents cuttlefish deep deep-sea depths diatoms divers dolphin eels eggs eyes fathoms feed feet long female fins flattened float fronds gastropods giant grow head ichthyosaurs inches long invertebrates jaws jellyfish kinds known lampshell land large numbers larvae light limpet living fossils look male marine animals Mediterranean microscopic million years ago mollusks mouth mussels North oarfish ocean octopus Pacific pair pectoral fins plankton plants and animals plesiosaurs polyps prawns Radiolaria rays reefs remora reptiles rocks salps sand Sargassum sea-anemones sea-lilies sea-pens sea-urchins seabed seaweeds shallow waters shape shark shell ship shoals shore side skeleton skin small fishes South species spines sponges squid stalk starfish surface waters swim tail teeth temperature tentacles tide tropical tube Velella vertebrates weed whale shark worms zone