. Commercial fisheries review. Fisheries; Fish trade. 35 time at a high temperature. This stabilizes the orange-red surface color and preserves quality. 2) The high-temperature treatment is followed by a longer cook at a lower tem- perature. This makes it easier to peel the shrimp. Larger Lobsters Are Active at Night, Study Shows The SCUBA team of BCF's Boothbay Har- bor (Maine) Biological Laboratory has com- pleted a study of the night behavior of the lob- ster during the summer and winter. The div- ers observed and counted lobsters inside and outside their burros from sunset to sunrise and d
. Commercial fisheries review. Fisheries; Fish trade. 35 time at a high temperature. This stabilizes the orange-red surface color and preserves quality. 2) The high-temperature treatment is followed by a longer cook at a lower tem- perature. This makes it easier to peel the shrimp. Larger Lobsters Are Active at Night, Study Shows The SCUBA team of BCF's Boothbay Har- bor (Maine) Biological Laboratory has com- pleted a study of the night behavior of the lob- ster during the summer and winter. The div- ers observed and counted lobsters inside and outside their burros from sunset to sunrise and down to 70 feet. The observations indicated that lobsters of about 2-inch carapace length did not leave their burrows at night--while lobsters over 2-inch carapace length were active at night. Of these larger lobsters, about 80% in sum- mer - -and about 40% in winter - -ventured from their burrows after sunset and returned be- fore sunrise. Predators Also Active At Night Finfish that are known predators of the lob- ster--longhornsculpin, cunners, sea ravens, cod, goosefish, and wolffish--are relatively common and active inhabitants of the inshore ocean bottom during summer nights. In the winter, only a few inactive species of these finfish are seen. During the study, bottom water tempera- tures ranged from 14° to 16° C. in summer and from 1° to minus 1° C. in winter. Some Alaskan Fish Semidormant Below 40° F. Biologists ofBCF'sAuke Bay (Alaska) Bi- ological Laboratory discovered something in- teresting during underwater observations of Sashin Creek in April. They found the resi- dent rainbow trout, juvenile coho salmon, and Dolly Varden char semidormant at stream temperatures below 40° F. Although there were 20,000-25,000 resi- dent salmonids in the creek, excluding pink and chum salmon fry, only a few could be found. The fishes found beneath 1 ar ge rub- ble in pools or deep stream areas were tor- pid. They made no effort to escape. Different from 1967 Survey The behavior
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