Sea urchin presentation feb 16

Sea urchin presentation feb 16

• 1.
  Hale Kula Elementary GrowingSea Urchins
• 2.
  Problem-Invasive Seaweed ( Smothering Seaweed and Gorilla Ogo ) • Invasive algae (Smothering Seaweed (Kappaphycus / Eucheuma), and Gorilla Ogo (Gracilaria salicornia) has been growing in Kaneohe Bay for more than 30 years. Many reefs throughout the bay are highly affected by their spread.
• 3.
  Possible Solution 1-Super Sucker • Good tool to collect invasive algae from Kaneohe Bay. • Collects about 2-8 thousand pounds of limu per day. • Given to farmers for composting. • However, in 5-6 months algae returns.
• 4.
  Possible Solution 2-SeaUrchins • Sea urchins will eat invasive seaweed (Smothering Seaweed and Gorilla Ogo ) and help control its growth in the ocean.
• 5.
  Method 1-Growing SeaUrchins Fresh Water + Salt Water Powder Water: - Mixture of freshwater and instant ocean water mix. Sea urchin food: - Seaweed - Farm feed - Nori Results: - Many of the sea urchins in our tanks did not survive, about 15-20 sea urchins were released in December 2012.
• 6.
  Students Taking Data
• 7.
  Method 2- GrowingSea Urchins Using Salt Water Water: - Salt water was obtained from a faucet in Sand Island. Sea Urchin Food: - Only limu or ogo Results: - Higher percentage of survival rate for our sea urchin.
• 8.
  Ocean Release ofSea Urchins December 2012
• 9.
  Conclusions- Best way to grow Sea Urchins • Avoid touching sea urchins regularly. • Use ocean water to grow them in. • Clean water filter and scrub aquarium weekly.