Hydra Eating Daphnia

a hydra grabbing hold of a daphnia and beginning to consume it...
Credits: Background voices are Esther Jang and Alasteir Ong.

produced by Hunter College High School students

Category:

Science & Technology

Tags:

• mr.
• randolph
• hydra
• daphnia
• protists
• lab
• hunter
• college
• high
• school
• hchs
• biology
• 9th
• grade

[LoveMyQuarterHorse]

Hydra is an example of phylum cnidaria, which includes the jellyfish. They both have tentacles lined with stinging cells called cnidocytes. The cells contain a harpoon-like barb, connected to a poison sac, that shoots out on contact and stings the victim. It is one of the fastest biomechanical actions in nature.

This hydra has caught a daphnia much larger than itself but it's going to have a difficult time digesting it! Nevertheless, eventually it probably will.

See? Biology is cool!

[UnSeminarChildren]

Hydra are in the same phylum as jellyfish (cnidaria), but they're not immature jellyfish.

[bodybuildingispain]

Your a pussy

[InfiniteRedPill]

@hailmail321 I don't understand your knowledge. That sentence "It was like spazzing out" was spoke by one person. It does not reflect the American education system at all.

[pizzaoverlord12345]

@LoveMyQuarterHorse i thought the harpoon like barbs are called polyps :P is this right????

[hailmail321]

0:43 "It was like...spazzing out." ROFLMAO!!!!!!! This is why American public schools don't work...

[hailmail321]

0:45 "It was like...spazzing out." ROFLMAO!!!!!!! This is why American public schools don't work...

[gedankenwelten]

@jackhorncool

Triops don't like hydras. They have fragile gills on their feet, the stinging of hydra would hurt them a lot or even kill them if they are not *at least* 2cm long. If there are a lot of hydras in a fish tank, even the fish can become uncomfortable. They don't die, they are way too big, but they are annoyed. Only very few animals eat hydra. A few snails and *very* few fish.

Triops are also no "kick ass predators" though they are more or less predatory, yes.

[sErgEantaEgis12]

OM NOM NOM!

[41stgaming]

@jackhorncool: me vs. ur triops, I kick their... ya they dont rly have asses either :P

[weiner66]

so I am to suppose this hydra will use a simple straw that dehydrates away the essential juices of life, leaving one more daphnia an empty husk whistling in the wind, it's hopes and dreams turned to an ingredient in someone's soup?