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Sea squirts spread along the coast BAR HARBOR — An alien invader is popping up more frequently along the local coastline.  Very few tunicates, the small marine animals more commonly known as sea squirts, are indigenous to the Northeastern United States and Eastern Canada. Yet, there have been plenty of sightings by beachcombers, fishermen, sea farmers and others whose work is focused in and on the sea. Tunicates come in many varieties. Some look like gelatinous ping pong balls or a clear bubble. Another, called the orange sheath tunicate, is bright orange or red in color with no defined sh...

Tunicates turning up more along Maine’s coast MOUNT DESERT ISLAND — It is not quite the same as “Invasion of the Body Snatchers,” but some of the tunicates that can be seen along the coast more recently look like they could be invasive alien spores.   Actually, they are small marine animals more commonly known as sea squirts. There are large varieties of them from all regions of the Earth. Some share the same basic body parts that humans have, making them a distant relative, according to some sources.   Very few are indigenous to the northeastern United States and east...