120 Nezv York State Museum 



phyllum) grows in abundance, also giving shelter and 

 breaking the force of the waves with its mat of long 

 strands. Fucus and Asco phyllum often become so dry 

 between tides, that they crackle and break when touched, 

 but they are apparently uninjured and soon become pli- 

 able when wet by the incoming tide. The Irish Moss or 

 Chagreen (Chondrus crispus) may be found along the 

 New England coast forming a thick carpet on rocks from 

 a little above low-tide mark to a considerable depth. 

 Below the Fucus zone and only exposed during spring 

 tide are the Sea Lettuce (Ulva latissima) and many other 

 more delicate green and red seaweeds. Rock pools often 

 contain beautiful varieties of the more delicate species. 

 Red seaweeds are sometimes found on the shady side of 

 these pools, and in the larger pools also are found a rich 

 growth of a red coralline alga (Corallina officinalis) and 

 specimens of Laminaria (brown alga), some of quite 

 large size. The brown seaweed known as the Sea Colan- 

 der also occurs in such pools, and red algae are sometimes 

 so plentiful as to redden the rocks. The green seaweed 

 Enteromorpha with its ribbon or threadlike strands is 

 also found in pools. This form is widely distributed and 

 very abundant. Some of the red and brown seaweeds 

 form feathery plumes often a yard long in deep tide 

 pools, and numerous tufts of the red algae and others are 

 found growing on the Rockweeds. 



On seaweeds, particularly the larger ones, lives a 

 varied fauna. Certain species of sponges are found on 

 seaweeds. Many of the branched hydroid colonies are 

 littoral and among other places live on the hanging Fucus. 

 The sertularian hydroids are found everywhere along the 

 coast and are among the most common objects cast up 

 on the beach. They resemble delicate, plumelike sea- 



