SeaWorld has resumed its killer whale show just days after one of the animals killed a trainer there.

However, there are amphibious penguins and seals and a rich Marine life, ranging from the minute organisms called plankton to the biggest creature the world has ever known, the blue whale.

A nontoxic dye highlights water currents surrounding sea urchins off Vancouver Island, British Columbia. These small, spiny echinoderms are found in oceans all over the world.