Television in Scotland 4, and Channel 5, whose broadcast coverage is more limited, and in very remote areas difficult or impossible to receive. Scotland has its own BBC Scotland services, BBC One Scotland and BBC Two Scotland, which commenced broadcasting on 14 March 1952 and 20 April 1964 respectively. Much of the output of BBC Scotland Television, such as news and current affairs programmes, and the Glasgow-based soap opera, "River City", are intended for broadcast within Scotland, whilst others, such as drama and comedy programmes, aim at audiences throughout the UK and further afield. Sports coverage also differs, reflecting the fact that the
Largest organisms shorter than some other echinoderms. The longest echinoderm known is the conspicuous sea cucumber "Synapta maculata", with a slender body that can extend up to . In comparison, the biggest sea star is the brisingid sea star "Midgardia xandaros", reaching a span of , despite being quite slender. "Evasterias echinosoma" is another giant echinoderm and can measure up to across and weigh . The largest nemertean is the bootlace worm, "Lineus longissimus". A specimen found washed ashore on a beach in St. Andrews, Scotland in 1864 was recorded at a length of . Both the largest mollusks and the largest