A "globster" is an unidentified (at least initially) organic mass that washes up on the shores of a body of water.
The word "globster," which is a perfect word, was coined by the biologist and writer Ivan T. Sanderson. Unlike ordinary beached sea creatures, globsters have such perplexing appearances that their identities remain a mystery (or controversy) even after scientific appraisal.
According to Wikipedia, most globsters are eventually thought to be whales or large sharks.
Regardless of what they're "determined" to "actually" be (and even then, you don't have to believe anyone you don't want to!), globster sightings are among the best possible things that can happen in the summer. There have not been any good globsters in Summer 2014. There was a skeleton found on the super-British-sounding beach of Weston-Super-Mare, but pretty much everyone agrees that's obviously a stingray.
While we wait for this summer's true globster to arrive, take a look at 13 of history's best recorded sightings.