2026-04-22

The Two-in-One Sea Creature

Problem illustration

Did you know that some sea creatures can actually merge their bodies to become one single animal? Scientists have discovered that a type of creature called a "comb jelly" can do exactly that. When two comb jellies get injured near each other, they can fuse their bodies together to become one single animal. They share their stomach to digest food together, and their nervous systems connect so they can swim in perfect sync. In just two hours, two separate jellies can turn into one "Frankenstein" jelly! Learn more!

Wee Ones

Comb jellies have combs that shimmer and glow with beautiful colors. Imagine a pattern of light: glow, shimmer, shimmer, glow, shimmer, shimmer. What comes next in the pattern?

Little Kids

Scientists watched three pairs of jellies fuse together. The first pair took 2 hours, the second pair took 3 hours, and the third pair took 2 hours. What is the "mode" (the time that happened most often)?

Big Kids

In a scientific study, 9 pairs of comb jellies successfully fused their bodies together. If each pair has 2 jellies, how many total jellies became part of a "two-in-one" creature?

The Sky's the Limit

A fused comb jelly has two separate systems working as one. Scientists found that 9 out of 10 pairs were able to fuse successfully. Use the divisibility rule for 9: a number is divisible by 9 if the sum of its digits is divisible by 9. If a scientist had 1,233 jellies, is that total number divisible by 9?