A tube-like gadget called a spacer can help kids or people with trouble breathing use an HFA more easily. Dry powder inhalers (DPIs) require you to breathe in quickly and deeply. That can make them hard to use during an asthma attack when you canât fully catch a deep breath.
Some jellyfish are clear and can look like a plastic bag in the water. Others are in vibrant colors such as pink, yellow, blue, and purple, and often are luminescent.
The tentacles and the oral lobes both are covered with stinging cells. When the stinging cells are touched, they pop open and a tiny dart emerges from each stinging cell injecting poison into its victim.To defend themselves, jellyfish use small structures in their tentacles which shoot out when touched by anything.Though they do shoot at other jellyfish they do not hurt them.o defend themselves, jellyfish use small structures in their tentacles which shoot out when touched by anything. Though they do shoot at other jellyfish they do not hurt them.