Smucker's ("bringing you the goodness of jams, jellies, preserves, and smiles") and Welch's ("makes the most delicious jams, jellies, and spreads") are two of the biggest names in jellies and jams.

Box jellies are highly advanced among jellyfish. They have developed the ability to move rather than just drift, jetting at up to four knots through the water. They also have eyes grouped in ...