Take the plunge this year! These fun and tasty ocean party ideas – including sea party invitations, ocean party decorations, recipes, and more – will have all your guests feeling like they’re under the sea!

Best for

Girls and boys aged four through eight just love fish, mermaids, and anything else that can swim!

Party Planning

For peace of mind, begin planning your ocean birthday bash six to eight weeks in advance. This will allow you time to gather all the supplies that you need, including ocean party decorations, gifts, and menu items. Planning ahead also gives your guests time to RSVP and make travel plans, if needed. Don't panic if you find yourself short on time; you can still plan a great party! Planning ahead simply reduces the risk of conflicts with guests' plans and may increase your sea party’s attendance.

For under the sea party invitations, use white card stock or construction paper folded in half, and decorate it with pizza picture cutouts or ocean birthday party stickers. You can also use our easy, printable party invitations. Or, if you’re short on time, purchase personalized or pre-printed sea party invitations online. We recommend mailing your invitations three to four weeks prior to the party—any sooner and your guests may forget, any later and your guests may already have plans.

To simplify the rest of the party planning process, check out our Party Planning Timeline,  and read the paragraphs below for information on selecting ocean party decorations, sea theme party supplies, children's ocean party activities, and more for your child's party.

What You’ll Need

If you plan to use paper tableware and sea theme party supplies, our Suggested Party Supply List may be quite helpful. Please note that you may not need everything on the list; it is intended only as a guide.

For a sea party, think blue as your main color! Mix in light blues and dark blues for a little variety. Simple blue balloons and pretty blue streamers work perfectly. For goodie bags, purchase ocean stickers, mini fish bean bag toys, fish stationary sets, assorted candies, and other ocean party favors. Place all of these items inside clear or printed cellophane bags, and tie the bags closed with blue ribbons.