🌊Hawaiian & Polynesian Medicine

Sea Urchin (Vana)

protein

Sea Urchin (Vana)

ʻOta ʻika is a Oceanian dish consisting of raw fish marinated in citrus juice and coconut milk. The Tongan, Tahitian, and Samoan variants are essentially identical in that the raw fish is briefly marinated in lemon or lime juice until the surface of the flesh becomes opaque. The fish is then mixed with coconut milk and diced vegetables. This is the national dish of Tonga.

Conditions addressed

Immune SupportThyroidBone HealthFertilityHeart Health

How to use

3–4 oz per serving, 4–5× per week
  • Prepare by grilling, steaming, or slow cooking.
  • Avoid deep-frying to preserve nutritional value.

Interactions & contraindications

May affect immune activity

Watch for: Immunosuppressants (for transplant or autoimmune conditions)

Immune-stimulating herbs can work against immunosuppressive therapy.

May affect hormone levels

Watch for: Hormone therapies, oral contraceptives, and tamoxifen or similar medications

Some herbs have mild phytoestrogenic or hormone-modulating activity that can interact with hormonal medications.

May affect blood pressure

Watch for: Antihypertensive medications (ACE inhibitors, beta-blockers, calcium channel blockers, diuretics)

Combined use can push blood pressure too high or too low — monitor readings if you take blood pressure medication.

May thin the blood

Watch for: Anticoagulants (warfarin), antiplatelets (aspirin, clopidogrel), and other blood-thinning herbs or supplements (ginkgo, garlic, fish oil, vitamin E)

Combining blood-thinning substances can increase bleeding risk, including before surgery or dental work.