Table 2.— List of collections made in the tidal pool (when present) during survey of Fol- 

 ly Beach, S.C. (Oct. 1969-Oct. 1971). F = Fish; I = Swimming invertebrates. Plus in- 

 dicates incomplete data; dash indicates no data taken; < indicates weights of 0.5 g or 

 less. 





Tempera- 





No. of 



No 



of 



Total 





Date 



ture 



CO 



Salinity 



species 

 F I 



specimens 

 F I 



weight (g) 

 F I 



1969 



















11 Oct. 



26.8 



— 



6 



1 



130 



2 



365+ 



< 



18 Oct. 



17.0 



— 



5 







14 







38 







16 Nov. 



11.2 



32.0 



1 







14 







41 







2 Dec. 



10.8 



32.0 



3 



1 



58 



12 



809 



— 



17 Dec. 



7.9 



28.1 



1 







1 







5 







1970 



















2 Jan. 



8.0 



32.5 



1 







5 







22 







15 Jan. 



6.2 



26.2 



1 







4 







16 







1 Feb. 



7.3 



30.7 



























15 Mar. 



8.4 



32.4 



1 







5 







21 







11 May 



21.6 



31.6 



3 







76 







268 







26 May 



21.1 



31.8 



6 







251 







817 







9 June 



22.8 



28.0 



7 







759 







295 







23 June 



24.8 



28.0 



3 



1 



366 



1 



236 



7 



11 July 



23.4 



28.5 



4 



1 



73 



1 



215 



< 



25 July 



26.3 



32.3 



2 



1 



5 



1 



9 



1 



8 Aug. 



24.6 



30.7 



4 



1 



159 



1 



239 



< 



9 Sept. 



24.2 



29.6 



2 







3 







5 







23 Sept. 



25.6 



28.5 



1 







5 







1 







10 Oct. 



24.3 



31.2 



3 







51 







1 







7 Nov. 



14.6 



31.2 



5 







52 







149 







22 Nov. 



14.2 



31.2 



2 







132 







461 







6 Dec. 



10.7 



29.6 



























22 Dec. 



14.0 



32.3 



1 







50 







218 







1971 



















4 Jan. 



11.2 



25.8 



3 







17 







67 







21 Jan. 



3.7 



28.5 



























6 Feb. 



11.0 



27.0 



1 







1 







< 







17 Apr. 



14.9 



30.2 



3 







49 







14 







2 May 



18.0 



25.8 



1 







4 







14 







16 May 



19.8 



28.0 



1 







4 







13 







30 May 



18.5 



29.1 



























14 June 



24.0 



33.4 



























28 June 



25.1 



31.2 



























16 July 



24.5 



31.2 



























13 Aug. 



24.2 



29.6 



























12 Sept. 



25.5 



32.3 



4 



1 



46 



1 



73 



— 



10 Oct. 



23.0 



28.0 



4 



1 



14 



2 



28 



1 



the second year each yielded more specimens than in the 

 first year, with winter and summer each being a great 

 deal more productive. In each season of the first year a 

 greater total mass of fishes was collected than in the 

 same season in the second year. 



A comparison of data for seasons for both years com- 

 bined shows that more species were caught in summer 

 than in any other season and that diversity was least in 

 winter. In contrast, most specimens and greatest mass 

 were obtained in winter, whereas the least number of in- 

 dividuals and smallest mass appeared in the spring and 

 fall catches, respectively. For the most part, the in- 

 dividual years followed the same pattern. The high diver- 

 sity in the warmer months was expected, but the large 

 number of individuals and great mass caught during the 

 winter was not anticipated. The large winter catch, 

 relative to other seasons, may be due to at least two fac- 

 tors — motility and preferences for particular 

 temperature regimes. Most of the larger, faster fishes 

 that were caught in cold water could have easily avoided 



the seine when the water was warm. Menidia menidia, 

 the most abundant species, was caught over a wide range 

 of temperature (6.4°-28.3°C), but was most plentiful at 

 the lower end of that range, whereas Trachinotus 

 carolinus and Mugil curema (two of the most common 

 species of fishes) were not collected at temperatures less 

 than 14.6° and 14.9°C, respectively. 



Tidal pool. — More species, more individuals, and 

 greater mass of fishes were collected in the tidal pool dur- 

 ing the first year than in the second year (see Table 6). 

 These differences appear to be largely due to chance. A 

 tidal pool was present on 18 of the collecting days each 

 year, but only 1 of the 18 yielded no fishes or in- 

 vertebrates in the first year; in contrast 7 produced no 

 specimens in the second year. The absence of fishes from 

 a particular collection in the tidal pool was apparently 

 not entirely related to temperature because three collec- 

 tions which produced none were made in December, 

 January, and February (water temperature: 3.7-10.7°C) 



