from the Northern Fisheries Department of the Northumbrian Water Authority in England. The e g g s - f r o m a harvest of half a million eggs under incubation at the Kielder Salmon H a t c h e r y - w e r e flown across the Channel in specially-designed containers packed with ice. They were sent to the French fisheries organisation, Truites Bigoudennes of Brest, which is anxious to establish sea trout runs in Brittany. The project results from a meeting with Mr Douglas Iremonger, Fisheries manager of the Northumbrian Water Authority, at the International Symposium on Small Fisheries in Edinburgh in Ix ovember.
Research Institute of Constanta and the Bucharest Faculty of Chemistry. The coagulant, known as 'Petroabs' consists of small rubber granules of 1-3 mm diameter mixed with a special substance 'produced according to the formula of the research workers'. When scattered on an oil spill, the mixture forms solid lumps, which can then be collected and burned as fuel. Last summer, shortly after the first publicity was given to Petroabs, a test case was provided by a Greek tanker which spilled a considerable amount of oil in Constanta harbour, right on the doorstep of the Marine Research Institute. According to the Rumanian press agency 'Agerpres', the 'water was soon cleaned by Petroabs'. The Institute is now said to be producing Petroabs in 'quite large quantities' at a special pilot plant.
A fully automatic unit for the biological purification of ship's sewage has been developed at the Merseburg effluent treatment equipment works. The unit, known as the Saba, is suitable for ships with a crew of 35-100, and can process 5 cubic metres of effluent per day into mineral sludge and purified water, leaving no organic residue. The overall size of the equipment is 3 × 2 × 2.3 m. The Saba will be installed on the 'Atlantik' fish factory ships and also on several new sea-going freighters.
A scientific expedition made up mainly of British scientists is studying the flora and fauna of the Chagos Archipelago in the Indian Ocean with the aim of obtaining facts to support the case for this area being made an internationally recognised nature reserve. The 40 strong team of scientists and deep sea divers also hopes to re-establish a colony of dugong in the seas around the islands.
United States Poland The Northern Port at Gdansk, which includes a major oil terminal, now has an air barrier to prevent the spread of pollution. A pipeline, laid on the sea-bed, is filled with compressed air which escapes through perforations and rises to the surface; this creates a wall of aerated water which contains the pollution. The barrier was designed and constructed at the Institute of Hydraulic Construction of the Polish Academy of Sciences. According to Dr. G. Bendykowska, similar barriers have been installed at certain other ports throughout the world; the depth of the one at Gdansk is, however, she says 'unprecedented'.
Rumania A new surface-coagulant for oil-spills has been developed by Rumanian specialists from the Marine
The Environmental Protection Agency (EPA) is to take tougher action against industrialists who are dumping toxic wastes into public sewers to avoid regulations governing dumping in waterways. The EPA has announced it will sue organisations that fail to comply with their clean-up regulations, and it has been estimated that this will close a loophole being used by as many as 40 000 industries.
Hong Kong Damage to an oil pipe of the Hong Kong Electric Company caused a 6000 sq ft oil slick in waters between the mainland and Llama Island. The oil slick was tackled by the Hong Kong Marine Department's Pollution Control Unit which used a fire boat and three launches to spray chemical dispersant over the affected area.