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Kelp, help!
2430
12205
Riley confronts a big fear
5201
45436
How much oxygen do sea plants produce?
1032
19889
Can you hold your breath for 45 secs?
481
3078
How do rays breathe underwater?
442
21651
Can you hold your breath longer than a fur seal?
655
33734
Should all scientists wear glasses?
25
3072
Tricks to hold your breath longer
187
6208
How can fur seals hold their breaths?
6
2283
How deep can fur seals dive?
18
2371