In the crystal-clear waters of the tropics swims one of nature’s cruelest paradoxes: a jellyfish so tiny it’s almost ...

The angler outreach specialist for the Missouri Department of Conservation had heard about the Missouri invertebrates, but even so, he was awed “to see what is thought of as an ocean animal in ...

Strange springtime visitors — gelatinous sea creatures known as by-the-wind sailors, or Velella velellas— are arriving by the thousands on Bay Area beaches. Expect to see them sail onto Southern ...